Jan gets a licking

You've spent the next few hours replaying the memory of Jan sucking you off. At first, it's hot as hell, but after a while, you start feeling uneasy. After all, she's your sister. You shouldn't be so turned on by your sister, right? Sure, you've fantasized about her before, but having it actually happen is something entirely different. This has got to be wrong.

You realize you've been standing here, staring into the cupboard, and just failing to register anything in front of you. You shake you head and look again, trying to focus. It seems you've been staring at a can of tuna. With a sigh, you close the door and turn around. And Jan is right there watching you over the back of the couch, her chin propped up on her hands.

"Gah! When did you get there?" you shout, clutching your chest.

"Just a minute ago," she says, giving a small giggle. "Were you, like, lost in space or something?"

"What? No," you scoff.

She smiles a little. "You aren't thinking about sneaking off to masturbate, are you? Don't forget, we made a deal."

You blush a bit. "I wasn't. But, well, it doesn't exactly seem fair," you say without thinking.

Your sister laughs. "It's not fair that you get free blowjobs?"

"I'm trying to say that it's not fair that I'm being restricted and you aren't," you explain, hoping that Jan might relent if only you can make her understand your point. Even though you aren't sure what your point is. Sometimes your mouth just runs ahead of your brain like that.

She looks confused, then shifts into annoyance, but then suddenly she breaks out laughing.

"Are you kidding me? Dude, I was the one who sucked your dick. I don't see how that's 'fair' for me at all."

Now you're feeling trapped. "Uh, I, umm..."

"Or are you saying it should go both ways?" Jan asks, looking suddenly interested. "Maybe you should also be helping me out."

"Hey, hey, hang on a second," you object. "That's not what I said at all."

But your sister is on a roll and there's no stopping her. The next thing you know, you're kneeling on the living room floor, her bare legs on either side of you, and her crotch at eye level. She's wearing a short skirt, so there's only a thin pair of panties separating you from her pussy.

Part of you desperately wants to find a way out of this situation. "B-but, I'm supposed to keep my eyes on the TV, right? How can I do that if my face is... you know..."

But another part of you really wants to dive right in and make her howl. Jan doesn't seem conflicted at all, though.

"Just close your eyes and imagine I'm one of the girls from your porno mag or whatever. That should be enough, right?"

Without waiting for a reply, she hooks her thumbs into the waistband of her underwear and shimmies her hips, tugging the panties down. The scent of her arousal reaches your nose and makes your cock stiffen in your pants.

"Well? What are you waiting for? I gave you a blowjob, so now it's time for you to return the favor. It's only fair."

At this point, you decide to shove your fear and doubts in a corner and go for it. Horny has won the argument and horny has taken the wheel.

"Yes, ma'am," you say. You wanted it to come out as wry and humorous, but instead it's sounding more like desperation.

You press your face into your sister's pussy and begin licking. She tastes sweet, with a faint musky flavor. Her pubic hair tickles your nose, but you don't mind. She sighs and places a hand on the back of your head.

"That's good. Keep going," she moans.

Her encouragement is encouraging. You're enjoying the act of pleasuring your sister, but you're also pleased with yourself. You're not bad at this.

"Lick me faster," she whispers.

You obey and are rewarded with a loud moan. You push into her, your tongue sliding up and down her slit, flicking across her clit. She bucks her hips, pushing against you. You wrap your arms around her thighs and pull her closer, burying your face in her crotch. She cries out and writhes under your touch.

"Oh god, yes!" she screams. "Keep doing that! Fuck!"

Jan wavers and flops backwards onto the couch, but you stay with her. She grabs your hair and grinds herself against your face. You feel her legs shaking and her pussy tightening around your tongue.

"I'm cumming," she gasps. "I'm cumming..."

And then her body goes rigid and her grip on your hair turns painful. A flood of liquid pours into your mouth and down your chin. Her scream is long and loud and ends in a whimper as her legs sag and her body goes limp. You slowly rise to your knees, looking down at her. Her eyes are closed and her breathing is ragged.

"Holy shit," she sighs.

"Was it okay?" you ask.

"Hell yeah. That was amazing," she says, still catching her breath.