Let's do it!

You accept you're past the point of no return and **** back a wince as your sister cups and grips the neck of your scrotum, balls against her palm and fingers quick to close around them. She tugs them in a slow draw away from your body to get a good hold: this time, without your resistance.

Her head slowly turns over her shoulder again to show you the menacing glare of her green eyes, contrasted by her supple backside, toned shoulders and soft ass resting atop your lower belly. "I've really got you now!" She cheers with a wide grin, before her hips buck up a tiny distance. Her other hand grips and aligns your penis, her pussy envelops your penis with a wet slurping noise.

Your sister's free hand moves to rest on your knee while her spine arches and her butt presses against your lower stomach "Mnmmph!" She groans in a slow utterance of substantial pleasure.

-you feel it, too! Your stomach flutters as an insane molten-hot softness grips your dick. You've lost your virginity to your sister, and she drops-down to **** the rest of your cock into her vagina, all while she keeps a taut hold on your balls.