Yes, as you return to the limo

Once the movie is over, the seven of you (you, Justin, four identical girlfriends, and Corrine) head back to the limo. The good result of watching the stupid movie is that Justin's girlfriends are very happy and willing to share their joy. They take turns hanging all over Justin with one of them always hanging on your arm, opposite Corrine.

Once inside the limo, all the girls lavish their attention, fondling, and kisses on you and Justin. You realize when Corrine starts unzipping your pants that only two cocks are in the car, but five girls. You want to even things up a little, but not too much. It takes you awhile to think once Corrine takes your cock in her mouth again. Just as your head explodes and your cock erupts in Corrine's mouth, you get a vision of one of the quints with a cock and a pussy. By the time Corrine is finished slurping your cum down, one of the girlfriends is squealing with delight.

"Oh, my God!! I'm growing a penis!" she says with a tone of awe in her voice. She lifts up her miniskirt to reveal a thick cock above her glistening cunt.

"Hey, what's that for?" Justin says with a confused look on his face.

"Well, not that they'd lose interest, but I don't want anyone getting bored. I thought three cocks in this situation was better than two, as long as it didn't require an extra guy." You smirk at him. He gives you a thumbs-up and a smile.

The Ann next to you spreads her legs apart and says, "Come here, Ann-with-a-dick. Lose your male virginity to your sister!"

Everyone in the limo stops transfixed as the newly-minted hermaphrodite crawls over to the other Ann. They kiss wildly as the penis-sister lines up her equipment with her sibling's pussy slit. They both groan as the cock slides home. "Shit! I've always wanted to know what it felt like for a man!"