You wind up in your parent's bed

You try to suggest that there's lots to do, that now isn't the time, that Gwen could come back anytime. But it falls on deaf ears. Trish nods and seems to listen, yet her only response is to kneed your breasts and grind her cock against your ass. You're biting your lip in no time, wondering just how much of the reaction is being caused by that blasted tattoo.

When she's sure you're nice and pliable Trish asks, "So... want to show me the bed you slept in all these years?"

You blink a few times and take in your room, realizing that if you did have sex here, as a woman, it would crush something deep inside you. Your sister's room would be even more wrong - as a guy you never could masturbate in there, something you recall from a rather shameful night years ago. When Trish tries to guide you over to your bed you pull her arm, spinning her toward the door. "My parents bed is a lot bigger."

"Ah, that's the spirit!" she says, her voice dripping eagerness. Together you half walk, half fondle your way to the master bedroom.

Once there Trish pushes you back onto the mattress and then stands between your thighs, seductively wriggling out of her jeans. "Nice place," she says, looking around your parent's room. She's just pulled down her panties when she focuses on something. "Cute family, too," she says, looking at a picture your Dad took a year ago. She looks down at you and grins. "So how do I know I wound up with the better sister, hmmm?"

You know she's baiting you, so you try to reply nonchalantly. "Well you did manage to knock me up - plus you're not Gwen's type."

"Oh, you'd be surprised. I bet your older sister would give me a shot. It would be kind of a family special if I pregged her too."

While she's laughing at her own joke you try to twist your legs and knock her to the bed, but Trish is too strong and too well balanced for that to work. Another reminder of how much weaker you are in this body.

Trish grips your legs and forces your knees apart, then giggles and says, "Nice try, miss - now how are you going to show me I picked the right sister?" She teases you by crooking a finger around the string of your thong, tugging at it until your little red slip of fabric is lying forgotten on the floor.

You feel a little twinge in your heart when Trish says that she picked you. Maybe it's the tattoo, but you decide not to second guess your instincts. Right now they're telling you to make your partner a weak kneed mess. You sit up and slide a finger down the underside of her cock. You meet her eyes and, in the most seductive tone you can manage, tell her "Let me up and I'll show you."

She's already hard and leaking some precum, so you know foreplay is kind of pointless. Instead you lean forward and suck Trish's sizable manhood into your mouth. You use one hand to steady yourself, the other to tease her hefty ballsack. The low moan your girlfriend lets out tells you you're getting better at this kind of thing.

You make sure to take her all the way into your throat, since another benefit of this female form seems to be an almost total lack of gag reflex. It was a bit difficult the first time you sucked off Trish's shlong, but now it's no more difficult than licking a lolipop. As you tongue Trish's balls you wonder if that was how you were meant to avoid all this, if that was the challenge that bitch had in mind - give blowjobs for a few days or wind up pregnant. On top of that your new body is starting to get used to anal. Maybe it was your male side, your unwillingness to blow a guy or get pounded in the ass that made sure you wound up in your current situation.

You're in the middle of wondering if your male self could ever have enjoyed the smell and taste of Trish's musky shaft when she suddenly pulls back. "Oh, God you got good Jane. Now lie back, daddy needs to cum." You lie back on the bed, slowly, seductively, spreading your thighs till you're knees touch the sheets. Trish leans in and you feel a small, wet wad of fabric slide from your pussy. Trish slaps it into your hand, telling you "Hold on to this." You're so surprised you act on autopilot, doing exactly what your horny girlfriend wants.

Trish wraps one hand around her shaft and then presses her cock against your twat. Just the first inch or so slides inside, but you let out a happy little purr that makes your girlfriend smile ear to ear. "Can't wait for another batch, huh?" She starts stroking herself more and more furiously. You lay there, watching her and enjoying the feeling of her thumb slapping against your labia. Trish looks up at the ceiling, moans and says, "Here... it... comes!" With that her knees buckle and the full length of her stiff rod seats itself inside you.

You feel it. Squirts of hot, thick cum being pumped deep inside your belly. You smile to yourself and just lie there, happy to have your lover buried inside you. Right now it doesn't matter that you're fucking on your parent's bed, it doesn't matter that your girlfriend wants to knock up other girls, it doesn't even matter that she just talked about how she'd like to fuck your sister. All that matters is that she's here and she loves you. It helps that after cumming she starts mercilessly rubbing your clit and using her fingers to find and then mash your g-spot. With all the attention you cum quickly, arching your back and digging your fingers into the sheets.

Trish gives you a few kisses, then leaves you there to recover. You hear the sound of plastic crinkling, then you feel something press between your pussy lips. Trish laughs and says, "Courtesy of your mother," as she pushes another tampon inside you. Too tired to worry you just mumble a halfhearted complaint about so many tampons being used on the same day. Trish ignores it and pulls your thong back up your legs. She gives you a kiss and says, "I just want to keep your pretty skirt and underwear from getting covered in cum. Oh, and you can throw the old one away."

You had completely forgotten the used, cum soaked tampon sitting in your left hand. Mildly annoyed you get up and go to the bathroom. As you flush it away you look out the small bathroom window and see a car pulling into the driveway. Fuck! Sis is home.