(Inspired by Reese Robbins' scene for Kinky Family.)
My 20-year-old stepsister Reese was a goody two-shoes. She got good grades, she had a cheesy sense of humor, and she didn't dress with boys in mind. Our parents had been married for two years and in that time I hadn't once seen her get in trouble, leave a mess or speak about interest in a boy.
She had once told me she was straight, and I'd tried to picture what it might look for her to blow a guy. I thought about her brace-face slobbering over a big dick and giving a nerdy smile as she pulled up for air, while the guy said dirty things about her and held her long brown hair back. And maybe after I started picturing this, I started seeing her in a different light.
On a lazy Sunday afternoon, after a hang-out with my friends ended early, I was stunned to come back and find my stepsis Reese rubbing her pussy in the living room as she filmed herself. She had a classic nerdy outfit on -- a lilac top that was both skimpy, because of the heat, and that covered her arms; her short skirt matched. Her skirt was raised up to her waist as she rubbed her pussy raw, her purple panties to one side. I admired her long legs, half spread, for a minute before walking in.
"Are you recording yourself masturbating? What is going on?" She snapped upright, holding her legs up to her shoulders, protectively.
She denied it. "I was not doing that." She couldn't even say the word. "You didn't see anything. Stop it," she said, but with a look in her eye that something not-so-innocent was happening.
I complimented her and said I liked what she was doing. It was a bit weird to say, but she's not my actual sister. "You're so gross," she said, but almost laughing. She didn't have a boyfriend and she was clearly horny. I said I could help her out and she told me: "that's disgusting -- you're so nasty. I'm literally your sister."
As I clarified, "stepsister", she smirked.
"Knees down, sis," I told her, and I saw a flash of her purple panties as she did so, still reluctant but smiling. I was rock hard in anticipation. I couldn't have been handed a better chance to explore my stepsister's pussy. She went to stand up, saying she was going to her room, but she knew I had the dirt on her and was in control.
"I'm gonna help you finish what you were doing," I tell her. Reese glares at me, like she was half-tempted to keep up the pretence that she wasn't jerking off. "And, I bet that you won't even last five minutes once I start. In fact, if I can make you cum in five minutes, then you have to do all my chores for a week. If I can't, then I'll do all of yours."
After a few second she nods and says "okay", with a smile that reveals her braces. "But you can't tell mom and dad." Obviously my bratty sis is still worried about getting into trouble. As I look at her head on, I see her top shows off a bit of underboob. We agree that we can't tell any of our friends, either and pinky swear on it. She's more smiley and giggly now, looking forward to having her pussy played with rather than worried.
Over the edge of the couch, I guide her to lie down and spread her legs. She's wearing days-of-the-week panties: a purple pair with "Sunday" written across them. She pulls her panties off to one side as I start licking her pussy, her legs flailing around with her white trainers still on. I put my hands around her thighs to gain purchase. As I start going through the alphabet with my tongue, she starts to moan.
A couple of minutes in, she concedes: "You're gonna make me cum." I move my head around a bit and rub her pussy with my fingers as she flails around, cumming onto my face.
"I told you, little sis."
The next day is a heatwave, so I find my stepsister Reese wearing a green bikini. Her long hair is kept in place with two blue hairclips. She looks so innocent but says something that's not: "when you went down on me, it felt really, really good." She tells me she "wants to return the favour" and my heart skips a beat. Reese says that one time she saw my dick in the bathroom and that it was really big.
