You get the upper hand.

"I wish you had a pussy and not a cock! I wish you had your free will back!" the guys shouts. Suddenly you feel your mind come back to you and you see the dick disappear and a vagina in its place.

"Hey, why the hell did you do that?" th girl demands, "I wish-" but she is cut off by her boyfriend! He grabs the collar and wishes it was off your neck. While still a woman, you find yourself in control of yourself again.

"Hey give that back I'm not done!" the girl screams. She dives for the collar but her boyfriend jumps back! The wrestle on the ground until his cock accidentally penetrates her. In the wave of pleasure, they both gasp and he drops the collar. You reach for it and throw it around the girlfriends neck.

"I wish you would obey my every command!" you order. She is still bouncing around on her boyfriends cock but your sure it worked. You quickly take the collar off her and throw it around her boyfriends neck. "I wish you would obey my every command!" you order again. The girlfriend turns her head and says, "I will!" It becomes clear that the collar has worked.

You take the collar off the guy and give the order, "Fuck each other until you come! Then go sit on the right side of the van!"