Trigger warning: Drugging, non-con, and painful anal.

This is a work of fiction, all resemblances to real life people or places is purely coincidental. The narrator is just that, a fictional narrator. No person should attempt to copy or emulate anything in this story.

Summary: Narrator gets access to an experimental compound that causes extreme, unending horniness in women, and uses it on his unsuspecting girlfriend to turn her into a perfect, dripping sex toy.

[Part 1][Part 2 - This One!][Part 3]

The first day I wasn’t sure if I was going to go through with it. What if it hurt you… what if it made you sick? What if the effects were too powerful? But most of all, my desire overrode my fear, I wanted to play this out and see what would happen. I wanted to make you mine.

Two small jars, one with a light pink powder, one with a pure white. Both flavorless and undetectable. I brought you the first "special" smoothie after your workout with sweaty palms and a twinge of trepidation that I pushed down and kept inside. You were oblivious, feeling drippy and blissful after your workout.

I started light, with only a little of the pink powder. We fucked, normally, and you came on my cock but you weren’t mine. I could feel you drifting away and after you came you got up and went and watched TV without me downstairs. I needed more, to own your body.

An hour later you knocked softly on the door of my room. I was reading, and looked up from my book. “Hey” you said. “What are you doing?” as you came and traced my chest with your finger.

“Reading”, I said and hid my mild surprise that the powder might really be having it’s desired effect.

“So, I want to fuck” You said. “I know we just did it, but.... I kind of need it, now.” You ripped off your dress and threw it on the floor, your naked body shining in the light, your tight ass and perky nipples starting to make me a little.

“No” I replied with a sly smile, "I’m reading. And besides, we just fucked"

Your eyes started to haze over, and I could see your pupils dilate. You started absentmindedly grinding your hips the air.

“Please Daddy” you whined. “I’ll do whatever you want. I'll even deep-throat your cock” I could see the desperation rising, and you started trying to rub your ass on my crotch. You had never called me that, and to be honest, previously I would have said that I didn't like it. But in this moment It awoken something buried inside of me and I fucking loved it, and I could feel my cock get hard.

Now, I also know you had never deepthroated me before, you always said that it was something that slutty girls do, and that you wanted me to respect you. But to tell the truth I had secretly wanted you to deepthroat me for a long, long time, in fact, I secretly wanted more than just have my cock in your throat, I wanted to fuck your mouth over and over until you gagged and saliva dripped down your chin. Of course, I never said this to you. I love you. I respect you. But every time your lips were wrapped around me I wanted to thrust as deeply as possible and never stop thrusting until I cum and you're a drooling, babbling mess.

But I didn't say this. I don't know if It was out of fear of the powder not working, or just fear of pushing you too far.

“No” I said. "You have to show me you want it more than anything."

I wasn’t sure how you would respond to this, after all, the compound was mostly untested, but I had a suspicion with even the light amount I gave you i could start to push you in the direction I wanted you to be. Without hesitation you got on all fours and turned with your ass towards me, rubbing your clit and whining in a high pitched voice.“Pleeeassseeeee”

"Keep rubbing that little clit for me" I said, starting to stroke my now hard cock.

"Yes Daddy" you replied obediently, and started rubbing faster and faster. Soon your hand started to move desperately, quickly, across your clit, and you came on your hand, forcefully, body bucking and writhing with the movement."Hnnnppphhhhhh" you moaned, barely slowing your hand down before continuing just as you were before.

“Hmmmm, you ARE a desperate slut, aren’t you?” I said with a chuckle, satisfied the pink powder was working as intended. "Good girl. come here and let Daddy fuck your throat, then."

When you heard me call you "Good girl" it was like electricity ran through your body, and I could visibly see the juices dripping out of your hole. You wiggled a bit, like an excited animal, and rushed back to my crotch, almost ripping my pants trying to get it out, clutching it's veiny thickness with excitement. I was as hard as I've ever been at this moment, with the anticipation of finally fucking your throat and your extreme sluttiness, it was almost too much.

Without hesitation or any conscious thought you shoved your throat down on my cock like a good slut and immediately began to gag, choking on its hardness, and shoving your face down over and over. Eventually I joined, thrusting in and out while holding the back of your head just like a fleshlight, in and out, loving the gagging sounds you made, the choking, slurping, and even the tears that ran down your face and blurred your makeup. It was all I had wanted, using your mouth like a fuck hole, and it was amazing.

I knew then I was in trouble, how could I stop with just using the compound once?

Eventually I needed to be inside of you, so I picked you up from the floor, threw you against the side of the bed and shoved my dick into you. I remember the desperation you were feeling, the wetness of your pussy, and the heat inside you. It was like all you needed in the world, and would ever need, was my cock inside you, filling you up. Your eyes rolled back in your head and you started screaming as an orgasm rolled over you.

I remember the orgasms when we used to fuck, how strong and powerful they felt, your body gripping mine in ecstasy. But this was different, this was guttural and all-encompassing, it came from deep inside you and rolled through your entire body like a massive wave, you shuddering and shaking as if vibrated from an earthquake, even lifting you up off the bed a little.

But most of all, the screaming was something primal. It wasn't just screams of pleasure, but screams of everything all at once. I ever heard such a scream before in any of my partners, let along you. If a neighbor heard they would have thought I was hurting you, attaching you, but instead, you were in the throes of the purest joy.

Eventually I pulled out. I didn't want to use all my ammunition at once, knowing the pink powder would only last a few more hours, but you started whining again (seemingly the compound made you extremely whiny, and you lost most of your ability to speak coherently), so another idea came to me.

Just like with deepthroating, you had never let me fuck you in the ass for similar reasons. "It's just not something good girls do" you had said when I asked. And with a finality "Plus, it can hurt, and I don't see the point where there's a perfectly good hole right there that is designed for penises" pointing to your pussy with a hint of glee.

Well, as much as I love you, I wasn't going to let this opportunity pass me by. With you still whining and squirming around I quickly spit on my still rock hard cock. I was in a desperate headspace too, and and knowing that it would probably hurt you without preparation (I'm truly sorry for this), I shoved my spit soaked cock into your tight asshole. I could feel your little ring resist my intrusion at first, and you screamed, this time colored with more pain, but you still writhed around in pleasure.

I could feel your pussy juices drip onto my leg as I started to thrust aggressively, my mindset focused and mean. I didn't want to think about your pain anymore, I just wanted the pleasure of feeling your tight asshole for the first time. It was such a pleasureable sensation, the spit providing just enough lube to make it soft and wet, but your hole was so small and tight every thrust I could feel the ring squeeze my cock. Within a minute you were cumming again, screaming with pain and pleasure, body vibrating on me as I took you from behind.

Eventually I came too, filling up your hole with my cum mixing with your spit. When the orgasm subsided I pulled out and my cum starting to drip out of you. I was about to leave to go wash up and put clothes on, leaving you laying on my bed, hair a mess, pussy and ass still throbbing, but you clutched at my arm with desperation.

"Wait, Daddy, please" you pleaded. "Watch me, it turns me on."
Intrigued, I stopped, looking at your naked body, red ass and dripping asshole as you around and scooped up my cum and spit and licked your fingers clean.

"Thank you Daddy, you said" and I could tell you were going to be perfect.