Green Light!

"Awww what wrong sis, getting a bit flustered. I bet you love this pussy now that you finally were able to feel what a cock is meant to feel like. . God danm this is amazing. Just hold it. I did it all the time. Fuck yessss!" You strain to talk as you take it all in. To Gwen's dismay you continue to work her cock with you cunt. In the back of your mind you recall that "just holding your cum" never really worked and you had always failed in doing so. Her cock must be ready to burst and with her obvious inexperience one wrong move would set her off locking your fates forever. However, the thought of missing out on such pleasure was criminal. You were hungry and hungry enough to throw your entire life away for an orgasm .

"Are you even listening to me. This feels ....fucking amazing but its too much. I'm not sure how long I can hold out for....Fuck! Shit I can't do this. You know how much cum I could have! God danm You are so god danm hot and tight...is this what having sex as a man feels like?!!" Gwen lays there helpless as you slowy grind on her cock. Once an accidental invasion has turned into a full blown fuck.

"I know right! Just relax and let it happen sis. I knew you loved it. We need to test the water so let me show you more. Just get lost in how it feels, the warm tight hole squeezing every inch of you. Throbbing around your cock. Making your heavy balls twitch. Just hold on. Let me fuck you just for a little bit. " I couldn't even believe half the shit that was coming out of my mouth at this point. That little distant voice that was screaming 'YOU'RE A FUCKIN' DUDE' was getting increasingly duller and the fear of being trapped as a girl was almost non-existent.

"Fuck..FINE! Just a bit more Yess this is good...rrright there... Fuck me I can't cum inside you. Don't push it...Uhnnn I don't know... how long..Uhnn... I can last. Fuck yes...Just go slow. " Gwen caves and compromises on the obvious one sided agreement. Her cock was bouncing about inside as it was lodged against the walls of my constantly constricting pussy. Her hands now gripped you ass and were moving with your motions. You smiled at your triumph and got a bit more comfortable spreading your legs a bit to get more leverage. I guess the years of watching porn finally are paying off.

However you couldn't quite get there this way. You needed more friction and sensation in different spots inside of you. You were hitting the right areas but not enough. 'I wonder if going up and down more would solve this problem?' you thought in your incoherent babble inside your head.

Painfully , slowly and carefully you leaned forward puting you hands on either side of Gwen to support your weight. You started lifting yourelf almost completly off of your sisters cock with the head still inside you. The cool air sent a shiver down Gwen's spine as you directly into you sister who was biting her lip trying to no doubt no cum. You continue to watch her expression contort and her month falls open into an 'O' as you push backward sliding down on her cock in one stroke with a deep groan of your own.

"Holyy fuuuuck yess..you need to slow downn!! This is too much...uuuuuuun.." Gwen's eyes roll round as she loser her train of thought as you pick up the pace a bit.

"Fuck yes there it is. God danm that's hitting the spot now. Just hold right there. This feel soooo much better than doing it myself. I just need a bit more." I say as you continue to repeat the same action over and over again. The head of her cock was repeatably bumping into your cervix as you stroke her cock with your pussy. You feel your body tense up and ache for more as you grind you pelvis into hers in between thrusts pushing her cock as deep as it can go. Your pussy starts to contract and rumble. It's on fire and you can sense an monster of an orgasm coming.

You feel a throb and a twitch deep inside you. A signal of a ticking time bomb of Gwen's baby maker ready to pop. But you are too far gone in lust to care. You at this moment have gone rabid with desire and needed to cum. You move faster as you pick up a good rhythm. You were surprised she had lasted this long. Gwen's eyes start to bug out as her breathing gets a bit irregular.

“ Your going too fast! Your getting tighter... Oh god...This feels so good but ...it feels like somethings comming....like I need to release. ..oh shit .Oh. ...ffffuuuuuuckkkkk I think I'm gonna cum. I can't control it. Get off of me NOW!! I CAN'T CUM INSIDE YOU!” Gwen strains to dislodge you as you move harder and faster.