Chapter Text
She's winning a game that she (probably) doesn't even know she's playing. My eighteen year old stepdaughter is either the most naive smokeshow I've ever met... or a conniving little twat. The jury's out. But fucking christ, if she ends the summer without her pussy comforming exactly to the shape and dimension of my cock, it'll be a fucking miracle.
On paper, I'm a really good guy. I pay my taxes, I'm not in debt, I own my own home, I'm not on a first name basis with local law enforcement, I have a stable job that I've been at for over 10 years. I also married a down on her luck single mom about five years ago so that her and her kid could have health insurance. I'm a sucker for a sad story. Gwen had been struggling for awhile before I met her at the diner she worked at. I had just been transferred to the town for my job and the diner was the closest lunch spot to my office. The sad story starts how you expect - baby daddy took off right after the kid was born. The story then turns into the kid is sick and needs constant medication. With no health insurance at the diner, it's not difficult to fathom what kind of pickle Gwen was in. Unable to afford both the medication and the rent, Gwen and the kid were living out of her car, and had been for the past eleven months.
So I offered to marry her, give her and the kid a place to live and most importantly, insurance. After a lot of fussing, Gwen agreed. That's how I ended up with (for all intents and purposes) a business partner instead of a wife and a diabetic, thirteen year old stepdaughter named Riley.
When Gwen died a year and a half ago from cancer, Riley stayed with me. And as of two weeks ago, when Riley graduated high school, I was no longer legally responsible for her as her guardian. And that's when I finally admitted to myself that I had a problem. A five foot four with a great set of tits and a body that wouldn't quit kind of problem. An out of school until September, no longer jailbait, always around kind of problem. I just had to make it until autumn without doing something stupid and then we wouldn't be around each other as much and the temptation would lessen. But then the record breaking heatwave hit, and the clothes she wore, and the modesty she once had, both got smaller and smaller the longer it carried on.
Riley had just gotten home from a one-time volunteer gig in town and ran up to her room immediately to change into something cooler. She yelled, "Hi, Daddy!" when she breezed past my home office. I finished typing up the email I was sending and walked down the hall to see how her day was. Her door was halfway open and what I saw stopped me in my tracks. Riley was standing in front of her mirror playing with the edge of her top. It was obvious she'd already taken off her bra, since I could see it on the floor. I held my breath and made promises to every deity I could think of as long as they could subliminally get her to lift her shirt. Her tits had been tempting me for too long - I wanted to see them.
I was in a trance waiting for her to make a decision of leaving the shirt on, or taking it off. Subconsciously my hand drifted down to my dick and started stroking my shaft through my basketball shorts. All of a sudden she pulled her top up to under her chin. Her breasts popped out and she started touching herself. Squeezing, kneading, pushing them together. I've never been so envious of a pair of hands in my life.
I was so caught up that I didn't even realize that she had her nipples pierced until she started playing with them. Pinching, rolling, pulling. When the fuck did she get that done? And how did I not notice before now? Girl never wears a bra in the house.
She kept tweaking her nipples until she couldn't help but make little whimpering noises and rub her legging covered thighs together. I was full on jacking off by now. I had pulled my shorts down to underneath my sac. One hand rolling my balls, the other fisted tightly around my shaft. I was stroking slowly, making sure I didn't make too much noise, and had my thumb massaging my crown. I was leaking so much pre, the waistband of my shorts was drenched.
She stopped to pull her top off the rest of the way and went back to groping her tits. She lifted the right one toward her mouth and my eyes opened wider. I saw her pink, little tongue snake out and start flicking away at her nipple and the silver barbell. She sucked her entire nipple into her mouth and moaned loudly. I had to bite my lip to make sure I didn't answer with a groan of my own.
After she sucked her other breast and both of her nipples were shiny with spit, she leaned forward and pressed them to the cold mirror. I could barely make out the sound of her piercings clacking against the surface over her gasp at the temperature change. Her whole upper body slumped against the mirror as she arched her back. I could see that she was moving her right arm and her hips were twitching. I could only assume that she was rubbing herself through her leggings trying to make her little pussy come.
Too soon, she let out a growl of frustration and pushed off the mirror to turn toward the half open doorway. The fear of her catching me lurking was enough to jolt me away from the doorway and quickly, but awkwardly, since I didn't pull my shorts back up, make my way back to my office.
I collapsed onto the couch and frantically jerked my cock. With my legs spread wide, my left hand cupped my balls and my fingertips pressed into my taint. My left hand was trying to recreate what I thought her cunt would feel like wrapped around me, and practically strangled my dick in hurried strokes. With my head thrown back and my eyes closed, I replayed what I'd just seen. Large, perky, pierced tits that like a little bit of pain, given the way she was tugging and pinching them. Throaty little moans. Breathy gasps and whimpers. The unmistakable smell of a wet, little pussy begging... to... be...
"Fuuuuck... Rileyyyy! Unfff!"
I came so hard my head swam. By the time I remembered what my name was, my chest was still heaving and I felt and sounded like I'd run a marathon. My energy was zapped. I looked down and had cum all over my t-shirt and dripping down onto my balls and all over my hands.
It was an impressive load, but it was messy as fuck and I needed to clean up. To do that though, I'd have to walk by Riley's room again. I gingerly got up and wiped my hands on my shirt to try and clean them off a bit. After tucking my dick back in my shorts, I casually strolled down the hallway and didn't look in Riley's room. I didn't hear anything when I went by either. That made me wonder if she heard me. There's no way that I was quiet. Did she know that her "daddy" just got off fantasizing about her? Did she hear me say her name when I came so hard I blacked out for a minute or two? Those thoughts caused my spent cock to twitch in my shorts. I could feel the tacky cum-covered head stick to the material.
I tossed my clothes in the hamper and headed for a quick, but cold, shower - I still had some work to finish up today. After drying off and putting on something clean, it was time to get back to the grind. I promised myself, before I stepped out into the hallway, that I wouldn't look in Riley's room again... and I almost made it. I was past her door when I heard her say, "Daddy."
I was too busy giving myself an internal pep talk to "not look," that I didn't hear what tone or cadence she said it in. Dread pooled in my stomach as I stopped in the hallway. Thoughts raced through my head: Did she hear me groan her name and she's creeped out? Did she see me walk by her room with my own massive load of cum clinging to and dripping from my body, and she's scared? It was time to pay the piper. I took a deep breath and turned back toward her door. I had no clue what I was going to say.
I pushed her door open further and leaned partially into the room. I had just opened my mouth to say, "Yeah, babygirl?" when I spotted her in the reflection of her mirror. I stopped myself from saying anything, but my mouth was still hanging open.
A bench she had blocked most of her from my direct line of sight, but I could see her bent knees poking up over top of it. But it was the mirror, clearly the best purchase I've ever made, that showed me what was happening. Riley was sprawled on the floor with her legs bent and open. Her hand was lazily stroking her pussy lips underneath her panties. She had on a tiny thong with lace around the edges, but it was completely drenched. And I mean fucking soaked. Soaked enough that it clung to her fingers and I could make out every knuckle and movement she made. I had so many questions.
How in the fuck? Twenty minutes ago, the girl was frustrated with her pussy rub and still had pants on. What on earth did she do to get to this state in that short of time? Is she a squirter? I looked closer at the mirror and saw drops and splashes of liquid clinging to it - yeah, my babygirl's a gusher.
She pulled her hand back further and the sticky, wet material clung to her and outlined her pussy lips. To my shock, it also outlined her clit. Her clit was... fat and noticeable, creating a defined buldge under her panties. She let out a satisfied sigh and slid her hands down to pull off her soaked panties.
I could see her thumb and pointer finger on either side of her clit and, at first, I thought she was pinching it. But when her wrist flicked and her thumb and pointer finger went up and down alongside her clit, I realized she was actually jerking it.
I pulled my cock out and started stroking it, matching Riley's pace. The revelation that Riley had a clit big enough to jack off like a mini-cock almost caused my knees to buckle.
It didn't take long for her thighs to start to twitch and her breathing to get heavy. Her wrist and fingers were flying until, suddenly, her hips snapped off the floor as she arched her back. I saw a tiny gurgle of cum escape at the same time I heard her choke on a moan. She quickly drew up her knees and placed all four fingers over her clit and rapidly rubbed back and forth. A second burst of cum shot out and splattered her tits, she kept rubbing harder and faster. Her third gush had her hips rocking up and down as she drenched the mirror in a constant stream that didn't seem to quit. My babygirl was loud as hell, making unintelligible noises as her little body lost its mind.
I hated the bench that blocked my view of her upper body - I wanted to see her face. Was her head thrown back? Were her eyes screwed shut? Her skin had to be flushed, what color was her blush when she was this turned on? As I watched her furiously frig herself, my dick shot its second load of the day, dripping down my shaft and falling to the floor. I was fucking spent, how on earth was she still going?
Her fourth squirt was the hardest and most intense. The spray so forceful, it distorted her reflection in spots. I could see her pussy and ass clench around nothing as her cum dripped down over them. I was entranced. Her body seemed to collapse in on itself by that point. Her hips lowered until she was laying in a puddle of her own cum - the rug and floor were soaked. Her fingers went back to lightly stroking her overworked pussy - it was like the last five minutes hadn't happened. Except this time I could hear her fingers sloshing as she languidly stroked her sloppy little cunt, slowly bringing herself down. A small fifth trickle bubbled out and that seemed to be the end of it. She cupped her pussy and her legs closed as her body rolled into the fetal position on the floor. And that's when I heard it.
"Ooooh, Daaaaaddy. Mmmmm."
I had completely forgotten that I had heard her say my name earlier - to absorbed in watching her. She said my name... twice. Did that mean she was thinking of me the entire time her little pussy was blasting like a firehose? I felt my cock twitch and pulse in my cum-covered hand.
I slowly backed my head out of her room and turned and went back to my own. Fuck work. Riley was going to be the death of me.
Whether she knew it or not, she had just won the game with that floorshow. My promise to myself to not touch her this summer was void. My willpower was shot. I wanted to be the one to make her come... make her squirt. Is she that sensitive all the time? Was her clit really that large or did I just imagine things? What did she taste like? Would she gush around my cock?
I was too curious and spun up to not vow to find out. This was a promise to myself I would keep. I just had to figure out how. It's not like I could ask her and I wouldn't force her. How? How could I convince her to let me make her come?