"A box of XL magnums?" You ask
"Yeah." He says smirking. "Try them on."
"What?" You ask.
"Your 18 now, a man, you gotta know how to use a condom." He says. "Common, try one one."
You look at him with a weird eye then walk upstairs and into the bath room.
"What the fuck is this?" You ask as you strip.
You look at your self in the mirror and then put the condom on. It's way to long but your dick begins to swell. Becoming extremely hard, you put your hand on it stroking and you start thinking about... boys? Yeah, boys. You start stroking faster and faster, you realize that this is the first time you've jerked off. You feel your body get hard and more muscular as you get warmer. You cum all over your dick ten inch, the condom gone. You look at your new hairy muscular body in the mirror. [] Your dick swells again and you get extremely horny again. You try to pull up your pants again but the fabric rubs your uncut head and you cum again. You body swell, the hair on your head shrinks back into high and tight buzz cut as tattoos show up on your body. You look at your self. []
You look so fucking hot, you go down stairs to thank dad.