Oh, how Theo's expression suddenly changed. At first it was anger and frustration, but that melted away when she heard the bit about the money. It was a good deal of cash, but I could afford it. Really, I was doing a good deed, helping my stepsis in such a way. Those pretty blue eyes squinted as she weighed her options.

"Tickled for how long?" she inquired.

"Just a few minutes," I lied, knowing I'd certainly be torturing her longer.

"And that's it, right?" she asked. "No more Vader tactics? This is the deal? A few minutes, and I pay you back half in the summer?"

"That's the deal," I promised. "No more changes. Sound good?"

"Fine!" Theo finally agreed, looking away. "Freaking…freak!"

Standing, I again brought up my hands as claws, slowly moving them toward her.

"Wait, wait, wait," she gasped, nervously. "Lemme get ready."

"Oh, I think you're ready," I smiled, inching ever closer.

"No private parts!" she shouted, as a last caveat.

"Obviously," I agreed, my fingers landing on each side of her torso. "Ready?"

I could feel her tightening up. Already, she was leaning away from me, making that cute scrunchy face. The anticipation must have sucked.

"Alright," she exhaled.

I didn't attack immediately. Instead, I placed my hands around her, my thumbs just under her breasts. Slowly, I felt for her ribs, and when I had them, I rolled my two thumbs simultaneously over the bone and down in between.

"Mmm," Theo grimaced, and I worked my way downward. "Uh! Huh. Fuck…"

In a circular motion my thumbs went, as I felt down along her torso. The poor girl tried to get away, first sliding to one side, then the other. But my hands stayed with her. Expanding out further along her sides, I increased the speed of my probing thumbs. Cruelly, I massaged those ticklish ribs.

"AHH!" Theo suddenly let out, when I landed on a particularly good spot. Screaming, she shook her head from side to side, which quite took me by surprise. "Fuck! Stop it. A-HA-HAHAHA!"

Theo always seemed like such a tough girl, and looking at her, one wouldn't say she was petite. But at that moment, she seemed small and fragile in my hands. Perhaps it had been a while since I'd been with a woman, and I'd forgotten how delicate they could be. My thumbs circled evilly over her ribs and between her ribs and across her ribs, digging nice and deep into those tender intercostal muscles. Each side of her ribcage received equal attention, and Theo was already losing it.

"A-HA-HA!" she laughed deeply, pulling hard at her ropes. "P-please! Stop. HA-HA! Okay. Enough! S-stop!"

Releasing her, Theo went silent. Why did she look so hot, sitting there restrained, shooting daggers at me while she panted? I might have been scared if I didn't wholly trust my ropework.

"Did you like that?" I asked.

"No, you ass!" she breathed. "Hope you had fun. Now let me out."

"Alright," I told her, moving in for her tummy. "Right after this."

"No!" Theo cried, as my fingers touched her belly. "Don't you dare!"

"No?" I asked. And then I dug in.

"Hahaha!" she laughed, trying to pull down her arms to protect herself. "You…hahaha…asshole!"

That stomach was as rock hard as she laughed. The poor thing tried to wiggle away, and she repeatedly yanked hard at the rope. I hoped the wooden beam under the table would hold. Those abs were so tight, and I poked my fingertips right in there, as if trying to grasp them.

"AHH!" Theo screamed. "No! AHH-HA-HA-HA!"

And her bellybutton… I couldn't neglect that. Sneaking my index finger into her little navel, I wiggled it about without mercy.

"SHIT!" Theo yelled, helpless against my belly barrage. "Oh, God. Stop! Please."

I did stop, as asked, and moved right along. Those hip bones were so easy to find, and I went for it. Both sides at once, I poked and prodded.

"NOO!" she yelped, lifting her bottom off the table in a panic, twisting and trying to escape me. "AH-HA-HA! Stop it! Please… N-not there. Not there!"

I gave her a break, removing my hands from the desperate girl. My lord, she was ticklish! The poor thing already looked exhausted.

"Tired?" I laughed. "Some athlete you are."

"Screw you," she huffed and puffed. "That's it, right? Done? Let me out."

"This is just a breather," I informed her.

"Daaavid," she whined, almost pouting. "No. C'mon."

Reaching over, I placed my hands on her thighs.

"You suck!" Theo shook her head. "This isn't fair. It's been longer than a few minutes. No, s-stop. Stop it. Uh! Haha. HAHAHA!"

The tops of her thighs were pure muscle! Ticklish, ticklish muscle. Squeezing here and there, I worked around haphazardly.

"OH!" Theo gasped, her knees trying to bend and her legs shaking as she fought to kick. "Ha-ha-ha! Oh, man! Okay, okay! Ahaha!"

I ventured up and down those smooth thighs, my fingers working her. Oh, she hated it! Traveling around to the outsides, and working my way back, I explored dangerously close to the inner areas. Such strong and powerful legs–able to carry Theo to multiple track trophies and college scholarships–and yet here they were, reduced to a quivering mess by a few simple movements of my fingers.

"ENOUGH!" Theo shouted between her bouts of laughter. "Ha-ha! Alright. ALRIGHT!"

I relented for a moment, and she stopped with all the ruckus. "You're so loud," I admonished.

"ASS!" she hollered, to spite me. "What, are you getting off on this or something?"

"Nah!" I lied, totally enjoying myself. "I'm just trying to teach you a lesson."

"Yeah, right," Theo argued. "You're just being a freaking perv-o."

"Oh really?" I asked, going for her knees.

"AAHHH!" she screamed, as I dug deliciously into those prominent kneecaps. "Oh, my God! No! AAHH!"

My stepsis was yanking at her ropes and bouncing her legs what little she could. My goodness, those knees were so sensitive! Who knew? I squeezed around them with the tips of my fingers, as if I were gripping her patellas. And what a show she put on!

"I-I don't like it," Theo was gasping. "I don't like it! UGH! Please, stop. David! Ha-ha! Stop."

"Geez," I said, releasing her knees, "do you have to be so loud? The neighbors are gonna hear you."

"GOOD!" Theo shouted. "I hope they call the cops and they arrest you."

"Oh, please," I rolled my eyes. "So dramatic."

I knew my poor stepsis was going to hate what came next. I was saving the best for last, and she must have seen my eyes wandering down to her feet.

"Don't even think about it," she snapped, with venom in her voice.

"But that's what all these are for," I said, picking up the tray table of instruments and moving it to the foot of the massage table.

"David," Theo began, reverting to her calm voice, "we had a deal. You've tickled me for more than a few minutes now. We're done. Untie me."

"We're not done," I informed her. "All of that just now? That was the buildup."

"I'm gonna fuckin' kill you," Theo warned. "You're in such trouble."

"Remember this?" I asked, picking up the feather and ignoring her comments.

"My feet are off-limits!" Theo tried. "Off. Limits!"

"Mm-hmm," I smiled, bringing the feather to her soles. Down the left one, I ran it.

"You don't listen very well," she said, her foot flexing only a bit.

"Shh," I hushed, running the feather up and down. "How's that?"

"Not bad, actually," Theo admitted.

Turning the feather on its side, I dragged it across both feet. There was a flinch here or there, perhaps a quiet chuckle, but she was pretty resilient to the softness of the plumage. So, I again went to the quill, and started to gently poke the tip randomly into her skin.

"Haha," she let out a little laugh. "That just…feels weird. But there! You tickled my feet, okay? We're all done."

I tossed aside the feather, disappointed. Obviously, I was going to have to break out the big guns. First, I grabbed the bottle of oil and started pouring a generous amount into my palm.

"What's that?" Theo asked. "Massage oil? I get a massage?"

"Oh, sure!" I smirked, rubbing together my hands before placing them on her feet. "How's that feel? Nice?"

I couldn't believe I was touching Theo's feet. They were so soft and big and pretty. The oil only made them sexier, as they glistened in the light. I didn't mean to bring her any pleasure tonight, but I found myself enjoying giving her a foot massage. I was sure to distribute the oil all around–tops and bottoms and toes. Those red nails popped with the sheen, and I rubbed her perhaps a bit longer than I meant to.

"Hey, that was actually feeling nice," she admitted, when I let go and wiped my hands on the towel. "More of that would be fine."

"I was thinking," I said, picking up the long red comb to show her, "more of this, instead."

"What," she looked a bit confused, "what's that for?"

"You know what it's for," I grinned, placing the teeth of the comb to her left foot.

"No!" Theo gasped. "Don't. No. Hahaha!"

Running the comb down her sole, her foot was immediately wiggling and fighting. I tried to grab her and hold it still, but the slippery oil made things difficult. She was actually doing a lot of the work for me, as if I kept the comb still, she'd keep right on flailing and tickling herself! But this was no good; I wanted complete control. It was time for another layer of immobilization.

"Gonna be stubborn, are you?" I asked, tossing aside the comb. "Alright…"

"What're you doing?" Theo asked, watching while found a piece of twine.

"Gonna tie your toes," I answered, seeing her one foot wiping the tickles from the other.

"The hell?" she asked, as I started to wrap the twine around her two big toes. "That's not fair!"

"You keep saying this," I laughed, bringing the leftover lengths of twine up to the metal eyelet on top of the stocks. There, I tied it off tight, leaving her soles helpless. "Fairness had nothing to do with it. Let's try this again."

Now that her feet were firmly held in place, I brought the comb across her heels, slowly zigzagging my way up.

"Mmm!" Theo smiled, those long toes trying to curl. "No. No! Hahaha!"

Up those soles I went, the teeth gliding across the smooth, oiled skin. Her feet tried to wiggle, but they couldn't go far. Up her arches, back and forth, and to the balls of her feet, I attacked.

"AHHH," Theo cried, as I reached just under her toes. "David!"

"No good?" I wondered, stopping momentarily. "How about in between?"

"Oh, my God!" she gasped, as I slipped the comb between her big and second toe. "Please, no. Ple–Ha-ha-ha!"

I sawed right between them, and then continued on down the line. Such a simple device, causing so much agony…

"AAHHH!" Theo positively screamed, and I did start to worry about the neighbors. "NOT BETWEEN! HA-HA!"

A few seconds of dragging the teeth back and forth, and I kept right along, moving now to the other foot.

"I hate this!" she breathed, trying to scrunch her toes and keep out the comb. "NO! Stop. I hate it. I HATE IT! HAHAHA!"

The last pull between her fourth and pinky toe was nice and slow. Poor Theo… Her chest glistened in sweat and her face was flushed. Panting, she glared at me. I still had two more tools to go.

"W-what is that?" she breathed, looking at the next tool I held up.

"They call it a Wartenberg wheel," I explained, "or a pinwheel. Something doctors use to test the nerves."

Placing the spiked wheel to her right heel, I slowly rolled the device upward.

"Ugh!" Theo grunted, her foot quivering. "Fuck!"

"How's that?" I asked, reaching her toes and starting back down.

"It's horrible!" she yelled. "It doesn't even tickle. It just hurts! Ahh."

"Don't be a wimp," I chided, moving to the left sole. Up and down it rolled, one pin after another poking into her nerve-packed flesh. I liked watching the white lines left behind, as the sharp points dug in.

"Uuggh!" Theo grimaced, her bound toes straining.

"These noises!" I laughed.

"Fuck," she gritted her teeth. "Fuck you, David! Ohh… N-no more. Please. It's torture."

"Alright," I said, having some pity. I traded the pinwheel for the electric toothbrush.

"No more!" Theo pouted, seeing the new instrument.

"Last one," I promised her. "This one's much more gentle."

The toothbrush hummed when I flipped it on, and I again started with her heel. Small circles around the smooth skin, and Theo seemed alright.

"Much better," she sighed. "I can handle that."

Upwards I went in little circular motions, bringing it over to her arch.

"Hehehe," she giggled. "It feels weird…"

I continued to the ball of her foot, and she twitched just a bit. Slowly upward, and I reached just under her toes.

"Ha-ha-ha!" she cracked. "Okay, okay."

And so I switched to the other foot, garnering a similar response. The closer toward her toes the toothbrush crept, the more ticklish she became. But the cute giggles were a welcome change from her obnoxious screaming.

"How about those toenails?" I asked, and placed the spinning bristles to the nail of her big toe.

"Oh!" she jumped. "Hah."

Then I touched the round nail of her second toe.

"That tickles!" Theo yelped. " Oh, my God, that tickles."

Down her pretty red nails I went, that spinning brush titillating the tops of her toes.

"Haha!" She shook her feet as best she could, trying to knock away the tool; however, I was quick to recover and find her nails again. "Why does that tickle so muuuch!"

"I'm just buffering your nail polish," I teased. "Hold still."

"It's already shiny!" Theo yelled at me. "Haha. You're such a dork."

"There we go," I grinned, removing the tool. "All nice and polished. Now, can you spread your toes for me?"

"What?" Theo gasped. "Uh, no!"

"After this, you're done," I told her. "Come on. Spread 'em."

"And this is really it?" Theo made sure.

"I promise," I said.

"Hmmm," she whined, and those long toes separated.

"Hold 'em just like that," I instructed, taking in the beautiful spread.

Slowly, I set the humming instrument, those bristles vibrating and spinning, right between her long toes.

"Fuck me!" Theo gasped. "AH-HAHAHA!"

"Keep 'em spread, Theo," I warned, as those toes quivered and started closing.

"ARGGG!" she growled, while I danced the brush in between those splayed digits.

The poor girl was laughing and grunting, fighting to keep her toes apart. As soon as the bristles would touch a new area, they would squirm and contort, as if they had a mind of their own. Lightly, I'd touch the sensitive skin, and the poor girl was in hysterics until I moved it to another spot. When I had danced the head of the brush between every digit, I began working on the thin toe stems.

"These are more like fingers than toes," I teased my stepsis.

"F, fuck you," Theo was trying to say, as she fought the sensations.

Up those sensitive stems I went, circling the plump toe pads on top. I'm not sure how it must have felt, but watching those toes twitching by reflex, I knew Theo wasn't overreacting.

"Such ticklish piggies," I chuckled. "We have to get them all, Theo."

"I-I can't!" she giggled and gasped. Finally, my stepsis gave up holding her spread and curled those toes as best she could. "I'm done. Pl, please, David. No more. No more! Mercy!"

I turned off the toothbrush and set it down. Mercy? Had I just broken Theo? The poor girl looked like a mess. Panting, her head hung down, blond hair in her face, her chest glistening with sweat. Truly, she was worn out.

"Okay," I grinned, taking in the sight of my destroyed stepsister. "You've earned your loan."

"Thank you," she panted, looking up at me. "That sucked. I mean, it really sucked!"

"Aww," I fake-pouted, brushing her hair back from her eyes. "Shall I set you free?"

"Yes!" She was quick to answer.

So I set to untying her toes and opening the stocks. Theo immediately removed her feet, and I untied the rope from under the table. Bringing her arms down, she waited while I unbound her wrists. Like a gentleman, I wiped off the oil from her feet.

"I'm a mess!" she said, getting up from the massage table and running her fingers through her hair. "My abs hurt from laughing, you dick. So do my cheeks!"

"Hey now," I warned, "be nice. You don't have your money yet."

"Don't you dare," Theo sneered, before making for the bathroom. "I better have it by the time I've changed."

"Very well," I chucked.

Indeed, I gave Theo the money agreed upon; she'd certainly earned it, free of interest. Was it wrong to tickle torture my stepsister in her time of need? I don't think so. Was it wrong to have pressed record on my camera and documented the whole affair? Perhaps there's an argument for that one. Odds were I'd never see the whole amount paid back, and so at least I had something to keep as a reminder of our deal. And maybe the next time Theo feels like making a stupid bet, she'll remember what could happen if she loses. And If it's me she returns to for help, I have a few different tickling positions in mind.

The end