It was my very first Comicon, and I was having one of the best days of my life. It just felt so good to geek-out, you know? To wander around dressed as Spiderman, dropping occasional forward rolls on the carpeted floor, spraying imaginary webs onto random passers-by who instantly joined in by pretending to be stuck to the nearest wall, letting loose the big kid who I think (hope) lives in all of us - it was honestly so thrilling I was almost giddy with happiness.

And, just when I thought the day couldn't possibly get any better, I saw her. To be fair, it was hard to miss a muscular, 6ft tall shield-maiden, especially when, pretending to be Spiderman, you've just rolled on the ground, sprung to your feet, and found yourself, hand bent backwards and imaginary web ready to fire, standing right in front of her.

If you don't know what a shield-maiden is, let me briefly explain...

They were the female warriors of the Vikings. Big, tough and powerful. They fought alongside the male warriors, and were very much their equals in battle. In Norse mythology, the Valkyrie were the pinnacle of shield-maidens - a fierce fighting force of ferocious females.

Samantha (as I later learned was her name) looked like the physical embodiment of one of those mythical warriors.

As I said, she was easily over 6ft tall, with broad, powerful shoulders and arms so perfectly sculpted that when I first saw her I thought they might be part of her costume - like one of those Hulk outfits where the 'muscles' are part of the suit. She was wearing a tight-fitting leather corset that gathered her breasts together and pushed them upwards, a short, pleated leather skirt that revealed thick, tree-trunk thighs, and boots that were almost knee height.

Her blonde hair was tied into two pigtails, viking-style, and she had the prettiest blue eyes set in a white, tanned face. On her back was slung a round, wooden shield, and hanging on her hip was a sheathed sword.

I know my description hasn't done her justice, but if you picture a tall, beautiful, insanely powerful looking viking woman dressed like she was ready for battle, you'll have an idea of the absolute vision I saw that day.

I'm about 5ft 8 inches tall, and I froze in place, looking up at this goddess, unsure how she was going to react to me.

She looked me up and down for a few seconds, her face set and unreadable, and then a mischievous grin spread across her lips and she said, "Well, Spidey? Are you just going to stand there, or are you going to shoot your stuff all over me?"

She raised and dropped an eyebrow to underline the innuendo, and then burst out laughing, her head tilting back and the sound seeming to fill the large conference hall.

I watched, completely entranced by her beauty, until she stopped laughing and looked back down at me.

"So, Spidey," she said. "Are you going to be brave enough to reveal your true identity? Or am I going to have to rip the mask from your face?"

I glanced around and saw that a small crowd of elves and superheroes and villains had gathered to watch our interaction. I'm not very good with crowds and even worse at being the centre of attention, but one of the best things about Comicon is that almost everyone you meet (especially those in costume) are fully committed to fucking the outside world off and just having fun. The faces around me were all smiling, all waiting expectantly for me play along with the random little scene that had been created, and I felt obliged to do exactly that.

"Let's keep this a friendly neighbourhood, Valkyrie," I replied, pleased with my improv skills, and even more pleased to see her react with a tiny smile. "Besides, if you want to take my mask off, you're going to have to catch me first!"

I spun on the spot, and was on my toes, ready to comedy roll away from her and then run and disappear into the crowd. Remember, I wasn't actually Spiderman. I was a 28 year old copywriter who used his only piece of exercise equipment (a stationary bike) to hang his wet laundry on. I didn't have webs to shoot and swing away on - all I did have was my wit, my ingenuity, and my hopefully surprising turn of speed.

And it quickly became obvious I didn't even have those.

Before I'd taken even one single step forwards, her powerful arms wrapped right around my chest, and she lifted me clean off the ground. I was completely helpless against the sheer strength of her. I could feel her leather pressing into my back, the hardness of her forearms as they constricted my chest, and I could smell the sweet floral scent of her perfume. It was a very confusing couple of seconds for me. I was surprised by how swiftly she had captured me, and even more shocked at how easily she had lifted my entire weight and then held it, seemingly effortlessly. I looked around and saw the crowd begin to laugh at the situation and I should have felt at least a little bit embarrassed, but I have to admit that the sensation of being held in that woman's arms, knowing that there was nothing I could do to escape her clutches, and that if she wanted she could have squeezed harder and forced the breath out of my body... well, it was stirring feelings deep inside me that I hadn't experienced before. I was, I quickly realised, turned on by it.

"Kick your legs out in front of you and I'll stagger backwards as if you've caught me off guard. When I drop you, turn and shoot your webs at me."

She whispered the instructions right into my ear, her breath travelling easily through the thin fabric of my costume and adding to my arousal. I nodded to show her that I understood. I wanted to play along for the now much larger crowd, and also because I knew if she held me there for much longer I was going to get hard, and there was no hiding an erection in a Spiderman costume.

I kicked my legs out in front just like she'd told me to, and she acted like it had thrown her off balance. She staggered back a few steps and dropped me to the ground, where I immediately pivoted and fired both imaginary web blasters right at her huge form.

She in turn pretended to be covered in the sticky stuff and staggered back further before falling onto the floor and lying there, writhing from side to side with her arms tight against her body, but her legs splayed open wide enough that I could see she had black panties on, and that her pussy mound was quite spectacularly large and rounded. It was beginning to seem like everything about this woman was larger than life.

The crowd of people around us gave a good natured round of applause, a few cheers, and then they began to disperse and drift away.

The shield-maiden raised herself up onto one elbow and looked at me, her smile beaming.

"That was so good!" she said, rolling onto her front, momentarily presenting me with an ass that was firm and muscular, before pushing up onto her feet. "Thanks for playing along. It's always much more fun when people get fully into the roleplay. I'm Samantha. Sam."

"Henry," I replied. "I agree, but to be honest I don't think there was much I could have done to stop you if you decided you wanted to crush Spiderman in front of the assembled crowd."

She smirked.

"You're cute, Henry. I like cute guys. How about you take the mask off and let me see if the face matches the personality?"

I was nervous. I'm not the world's most handsome man, and for some reason, even though I had only just met her, I already didn't want to disappoint Sam, but it would have seemed weird to refuse so I pulled my Spiderman mask up over my face.

Her smile widened.

"Peter Parker pretty," she said.

I knew I wasn't pretty, but it felt nice to hear her say that I was. I'd never been attracted to muscular women before, but only because they weren't very common. Not many on TV or in the movies, very few in porn even. I was definitely attracted to Sam though, and as she looked me up and down for the second time since meeting me, I was glad that my erection had been graceful enough to fade away.

We got chatting and it turned out we had both gone to Comicon on our own, because no one in our respective friend groups was into it, so we spent the rest of the day together, walking round the stalls, sitting in the audiences and listening to actors talk about the roles they played, and generally just having a great time. Sam was funny, and also very tactile. More than once during the hours we were together she gripped me by the arm, or the shoulder, and guided me towards something that had caught her eye. Every single time she did it I was reminded just how much stronger than me she was. If she wanted to, she could have folded me up like a pretzel, and there was something so fucking erotic about that. I'm not muscular, not tall, and certainly not used to using my 'masculinity' to overpower women, but even so, it was fascinating to be in the company of one who could swat me like a fly or use me like a human dildo, if she wanted, and there was very little I could have done to stop her.

I saw other men (and women) looking at her as we walked through the crowds, and I wondered if they were having the same thoughts as I was.

Eventually, the day was coming to an end, and the amount of people in the place had noticeably dwindled. It was only the hardcore element like ourselves who remained, just walking around and enjoying the fading atmosphere. I had spent the last fifteen minutes trying to figure out how to ask Sam for her number, and practicing what I would say when she refused to give me it so that I didn't feel too humiliated. I mean, why would a woman like her be interested in a guy like me? She was the type who would only date men who were 6ft 5 and above, and who had bodies that resembled her own, only harder, with fewer curves. Asking her was stupid, but I knew that I needed to or I would regret it forever.

Without realising it, we had walked our way over to the cloakroom area, and were standing in a small line of people, waiting to get our bags and suchlike that we had checked in at the start of the day. My turn came and I handed over the ticket and received my backpack that held my traveling clothes. I stepped aside to let Sam do the same, but she stepped out of the queue with me.

"I don't have any bags here," she said. "I'm staying in the hotel upstairs."

"Oh," I replied. "Well, I guess this is it?"

She looked straight into my eyes, gripped the front of my costume in one large hand, and pulled me into her, kissing me hard on the mouth for a second or two. I'd never dated a taller woman, and it was strange-but-nice having to tilt my head upwards to do so.

"Or," she breathed into my mouth when she broke the kiss but still me tight to her, "We could go up to my room."

It wasn't a question, and neither was it a command. She stated it simply. I could either go home now, or I could follow this goddess up to her hotel room and (judging by how passionately she had kissed me) we could fuck.

Less than five minutes later, Spiderman and the Valkyrie were standing outside her hotel room door.

As soon as we were inside she was on me, lifting me off the ground and pinning me against the wall as she kissed me hard, her arms wrapped around me and her tongue freely exploring my mouth.

I tried to grab her ass but couldn't reach. I tried to push my hand between us to feel her tits, but her grip on me was too tight. She was the one in control.

She dropped me to the floor, her hand straight between my legs, squeezing and groping my quickly hardening dick. I felt small. My dick felt small. It had never been squeezed by a hand as large and strong as Sam's.

"Do you want to fuck me?" she asked, biting down on my neck while kneading and tugging my cock. "Or, do you want me to fuck you?"

A sudden jolt of panic hit me. Did she mean actually fuck me? With a strapon or whatever? And if that was what she meant, would I be able to stop her if I said no but she was determined to do it anyway? She was absolutely strong enough to pin me down and do whatever she wanted to my virgin asshole. Had I been lured there by someone who wanted to abuse me?

"I don't want you to fuck me," I stammered. "I'm not into that. Please. I don't like things in my ass. Please don't."

She broke away from me, stopped touching my dick, stopped kissing and biting my neck, and instead put her hands on my shoulders and looked down into my eyes.

"Henry, I would never do anything you didn't want, okay?" She removed one hand from my shoulder, gently took hold of my chin and tilted my head up. "Okay?"

I nodded as best as I could, given that she was holding my head.

"What I meant," she continued softly, "was do you want to take the lead, or would you like it if I did?"

She kissed me hard, pushing her tongue deep into my mouth, pressing her body against me so that I was squashed against the wall, demonstrating her greater strength.

"You," I croaked when she released me. "You take the lead."

A wicked little smile flashed across her lips. It was gone in a second, but the burning desire in her eyes stayed.

"Good boy."

Without saying anything else, Sam put her hands under my armpits and lifted me right off the floor, then higher, until she was holding me up above her head. I felt her mouth kissing and nibbling my abdomen as she walked me over to the bed.

I wasn't expecting what happened next.

Sam threw me onto the bed. She literally tossed me through the air, and I landed heavily on my back. Before I could get my bearings she leapt onto the mattress, straddling me. Her hands found the zipper of my Spiderman costume, but instead of unzipping it she tore it open, ripping the fabric with ease and then yanking and tugging hard at it until it was literally torn from my body. Once my torso was free she dismounted me long enough, the bed audibly creaking as she moved, to rip the bottom half of the costume and my underwear down my legs and off.

"Such a pretty little body," she said, stroking up and down my thighs with one hand while she pulled off her panties with the other.. "Such a beautiful cock."

She leant over and sucked my hard dick into her mouth, pumped her head up and down once or twice, and stopped.

Sam looked at me. Sam liked looking at me. I got the feeling she did it in the same way and for the same reasons animals did it - she was asserting her dominance over me.

She held that eye contact as she straddled me again, and worked her way up my body until her pussy was directly over my face, so close I could smell it. She held that position while she unbuckled and then removed her leather corset, releasing two large, firm breasts. She stared down at me between them, rubbing and massaging them and pinching her huge, hard nipples.

Even though her legs were open, the insides of her thighs were still touching the sides of my head. That's how utterly fucking muscular that woman's body was. Her thighs were huge. They were incredible. If she'd wanted to, she could have crushed my skull with them.

After a minute of teasing me, she reached down between her legs, placed her fingers either side of her pussy, and pulled, stretching herself wide open, revealing her bright pink inner folds, pulling her skin so tight that her clit was forced outwards, sticking up away from her body, like a little mini cock.

"Smell it," she commanded. "Smell my pussy, Henry."

I breathed in deeply, inhaling the scent of her, musky and sweet and hot.

And then Sam dropped onto my face.

She dropped down while she was still stretching herself, and it felt like her pussy was wrapped around my face. I could feel the wetness on her inner lips on my cheeks as I suck my tongue out and started to lick her meaty cunt.

She gripped the back of my head and pulled me even harder against her, squashing her clit against my nose and cutting off my air, and held me there as she ground her pussy against my face. I held my breath and kept on trying to lick her, sure that at any moment she would release me.

But she didn't.

Instead she opened her legs wider and pushed her weight down onto me as she simultaneously pulled her head towards her. The pressure was incredible. She fucked my face like she was trying to smear as much of her juices onto me as she possibly could.

I was running out of air.

I started to bang on the mattress with my fists, and when that didn't work I tried to push her off me.

Nothing I did could shift her. She just held me right in place and used my face for her pleasure, her clit rubbing harder and harder against my nose, her grunts getting louder and louder, her thighs tighter and tighter, until, finally, just when I was about to black out, she took her orgasm.

Sam screamed and roared as she came.

And she squirted.

She squirted so much that my mouth was flooded and it ran down the sides of my face. She fucking gushed over me until I felt like I was drowning.

"Yes, little man!" she yelled into the air, the sound muffled for me by her thighs pressed against my ears. "Yes! Yes! Yessssssssss!"

I was punching her thighs, desperately trying to get her off me, kicking my feet and bucking with all my might, but she did not move.

And then, finally, just when I was certain this was how it was going to end for me, she released my head and lifted just an inch, but enough for me to spit out her juices and drag oxygen in through the sides of my mouth.

Sam seemed to notice me struggling to get enough air into my body, and raised herself fully up and off of my face, her pussy peeling from my skin like it had been stuck to me.

"Fuck, Henry, I'm sorry," she said, stroking my soaking hair. "I almost squished you!"

"No," I gasped. "You didn't. But you did almost suffocate me."

She climbed off me, and lay on the bed, slipping a muscular under my back and pulling me tight against her.

"I'm sorry. I just get carried away when I'm close to cumming, you know?"

"It's okay, Sam. It was pretty intense, that's all."

"Intense? It was fucking incredible Henry. I hardly ever squirt, but you made me do it the very first time you tried!"

She punched me on the shoulder hard enough that I knew it was going to leave a bruise. It was becoming very clear to me that Sam liked to use her strength sexually. I had never felt so vulnerable with a woman before. I wasn't sure whether I liked it or not, but it was probably quite telling that despite what had just happened, my dick was still hard.

And Sam noticed it too.

"How about," she said seductively into my ear, while at the same time taking a very firm grip of my shaft, "You lie back and let me return the favour?"

She tugged up and down on my cock, with short, sharp, quick motions. It felt aggressive. Her hand completely covered me. She made me feel so small, but she also made me feel like it was okay to be small. I liked it.

Sam briefly rolled on top of me, and I panicked as once again, I felt my lungs deprived of air. But it was only for a couple of seconds, and then she was over my cock, her hand still tight around it.

"Do you want to feel my pussy, Henry? Does your dick want to feel it?"

I nodded, my heart rate ratcheting up.

Sam looked fucking magnificent. Her thighs were glistening with a combination of sweat and pussy juice and saliva, the muscles thick and hard. She looked down on me, smiling, staring right at me in that slightly unsettling way, as she continued to pump my cock rhythmically up and down, the bicep on her right arm bulging, her tits jutting out in front of her, harder and more defined looking than any others I'd ever seen.

"Say it," she instructed. "Say the words."

She began to slide just the very tip of my dick along her pussy, pressing it into her inner folds and stroking along the length of herself with it. I looked down and watched as my cock parted her labia with each stroke.

With her other hand she reached behind herself and took hold of my balls, and applied just enough pressure to them that it was on the very edge of being painful, but not quite.

"I want to feel your pussy, Sam."

The hand holding my balls tightened its grip and a wave of dull pain passed through me, making me gasp.

"Say please," she said.

"P-please. Please. Please can I feel your pussy?"

The pain in my balls disappeared as she relaxed her grip.

"Good boy," she practically purred.

Fuck it was getting intense.

I felt so helpless. Never before had I been in a situation with a woman where she could have seriously hurt me. Or maybe I had, but with Sam the difference in our sizes made it much more pronounced. She was the muscular, dominant one, and I was the submissive.

Was that right? Was I actually submissive? Had Sam opened up a new kink for me? Or was it more that my psyche became naturally submissive when confronted with a woman who was my physical superior?

Those questions and more poured through my mind as Sam straddled me and rubbed and squeezed my cock.

She shifted her weight and moved my cock until it was right against her hole.

She lowered herself an inch, still holding me, and I felt the heat and the warmth of her as the tip of my dick entered her.

Sam smiled her wicked smile.

She lowered another inch, and another inch of me slipped inside.

She was teasing me. But unlike other situations, there was nothing I could do. There was no way I could grab her and flip her onto her back and mount her and fuck her at a speed that I wanted.

I had to lie there and learn how to control myself.

Another inch inside.

She had stopped stroking my cock now and was instead just holding the base, squeezing and releasing me over and over.

And then she tensed her pussy.

I felt it grip my dick like a vise and gasped in surprise. I had never known a pussy to be so strong, never before thought of one as being powerful. Hers was, and she knew it.

"You know I like to workout," she said. "And now you know that I never skip pussy day."

She kept working my dick like that; squeezing the base with her hand, then relaxing her grip and squeezing the tip with her pussy. Again and again, gradually speeding up.

Hand base

Pussy tip

Hand base

Pussy tip

Hand base

Pussy tip

Quicker and quicker.

Squeezing tighter and tighter.

Over and over until it all felt like the one motion, like it was just one continuous pulse of sheer pleasure travelling from my balls right up to the top of my dick.

And as soon as one wave stopped the next one started.

Sam rocked very slightly, her free hand now tugging hard on a nipple and kneading and squeezing a breast.

The sensation was too much. It was almost overwhelming. I knew I was going to cum, and told her so.

The words were only just out of my mouth when she released my dick from her grip, sat right down hard on it so that all of it was inside her pussy and leaned down, her forehead pressed against mine.

"You cum when I tell you to cum. Understand, Henry? You keep it in your balls until I allow you to let you out go."

She gripped my throat, and even though she didn't squeeze it, I knew that if she wanted to she could have easily throttled me.

I nodded to show I understood.

Sam held me by the throat, licked my face from my chin right up to my forehead, and began to ride me with that tight pussy, rocking her hips back and forth.

"When are you going to cum, Henry?" she hissed.

"When you tell me I can."

"Are you fighting the urge?"

"Yes, Sam. Fuck. Yes. Fuck."

Grinding her pussy onto me in, slow, circular, sensual motions. I could feel how tight she was, wanted with all my might to cum there and then and flood her, but knew that I couldn't.

I focused on controlling myself. Focused harder than I'd ever had to before, even as that perfectly tight hole demanded that I cum in it, on not allowing myself to orgasm.

And then, without any warning, my world was literally flipped upside down.

Sam had rolled us both, picking me up easily and turning so that she was beneath me, her hands holding tightly onto my hips.

"Fuck me, Henry!" she yelled into my face. "Fuck me haarrrrrd, Henry. Use these little hips. Fuck me like a man."

I tried.

I fucked into her as hard as I could, and she slammed her hips against me every time I thrust.

I fucked her harder than I'd ever fucked anyone, but clearly it wasn't good enough for Sam.

The grip on my hips tightened, and before I knew it she had lifted my body slightly away from hers, and was pulling me up and down, into and out of her pussy.

She was holding me in the air and fucking herself with my dick.

Fucking herself with me so hard that it hurt.

Using me like a human dildo.

Her arms pistoning up and down and up and down.

Her strong hands supporting my entire weight easily, and still enough strength in her arms to fuck herself with me.

"Fuck yesssssss!" she screamed. "Fucking yes yes yes yes yes yes yessssssssss!"

I was like a little ragdoll to this woman.

My face dropped against her breasts, getting smooshed against them, her nipples hard and digging into my eyes

Up and down she pumped me, over and over, banging her pussy with my dick until, maybe a full minute later, "Cum! Cum now! Cum you tiny little man! Cum for Sam you little fuck toy!"

And, I did.

And, she did.

We both did, and at the exact same time. It was like she had commanded my body to release.

As soon as I started to cum she pulled me out of her and pushed me upwards. I put my hands on her shoulders so I didn't bang her head with mine, and Sam kept pushing, straightening her arms until she was holding my hips above her tits, until I was very nearly almost in a handstand position above her.

And my cum spurted out of me.

I watched as it landed on her tits and her chest and her stomach and her face, spattering and splattering in thick, creamy drops.

"Fuck yes!" she yelled so loudly it was almost a roar. "Give me my cum! Give me my fucking cum! My fucking cum! Mine! Fucking miiiiiiiiinnnneee!"

The orgasm was incredible. It rattled right through my body until all of me was shuddering and juddering and shaking. Sam bent her knees, planted her feet on the bed and arched her back upwards, pushing her hips into the air, and at the same time lowering me back down until I was lying on her body again.

She was shaking too, and every couple of seconds her entire body jerked and flicked me an inch into the air, and then I'd slam back down onto her rock-hard abs and thighs.

Fucking hell. I mean, fuuuuucking hell, right?

Sam was in her own little world as she came. I don't even think she felt my weight on her at all.

Then gradually, so very slowly, her body started to relax as the orgasm faded, and she lowered her butt back down onto the bed.

I just lay there. My head sideways on her chest, her heart beating so strongly that I could feel it against my face.

For two full minutes she didn't speak. I didn't mind because I don't think in that moment I would have been able to reply.

It had been the greatest sexual experience of my life, and after something like that it takes your brain some time to rewire itself.

She stroked my hair, stroked my back.

I tried to roll off her but she embraced me tightly and held there.

"Good boy," she said, her voice now sleepy and heavy. "That's a good boy."

And her words felt good.

I felt good.

I felt like a good boy.

I was more relaxed than I think I'd ever been before, lying there in the arms of that mighty woman.

I heard her breathing change and knew that she had fallen asleep.

I rubbed my face against one of her breasts, kissed her nipple, and did the same.

THE END

Thanks to Laura for the idea.