You're laying there trying to decide what to wish, when you hear a shout and the sound of big feet running toward you.
"Look out!"
"I GOT IT!"
SQUASH!
"Aaaaaaaaaaaaaaaaaah!" you scream some big jock is standing there with his size 16 Addidas shoe firmly planted on your crotch. He's standing on one foot with all his weight on your groin. He's holding a frisbee, and grinning, but then he looks down at you screaming, and gets a sheepish look, as he steps off your crushed balls.
"Oh, sorry, dude, I didn't see you."
You sob uncontrollably clutching your bleeding throbbing nuts. Through your tears you look up at the guy, he must be 6'3" and is built like a tank. There is a huge bulge in his nylon shorts suggesting that he is a titan everywhere. A very clumsy titan.
"Dude, I wish I could swap crotches...AAaaaaaaaaaaaaaaaaaaaaaah!"
His nylon pouch shrinks, and the big jock drops the frisbee and falls to his knees clutching his crotch.
You stop crying. The pain is gone. Though your crotch feels a bit tight. You look down to find that you now have a 10" penis. Then you look at the sobbing jock and say...