Double the cock, double the pleasure, double fun cum

"Conduplico virilitas!" you shout. Mark screams as ripples move around his crotch. A bulge appears next to there his genitals are, straining the skin and then his genitals shift over as the bulge shoots forward into a second, slightly larger cock, uncircumsized, untouched, virgin cock. And you wanna take it. But the change isn't over yet. Mark screams again as a baggy scrotum forms under his new cock and two testicles big as golf balls emerge.

You laugh and stride over to where Mark is panting, moving sluggishly. Your roomate, the slut she is, took over the humping when Mark slowed. You climb on the bed and squirm onto his new cock and impale yourself, taking his whole length. Mark groans at his second virginity being taken from an organ he never got the chance to touch. How tender it must be. You scream at Mark, "Fuck me NOW! HARDER! HARDER! C'MON STUD I KNOW YOU CAN DO MORE THAN THAT!"

At these words of encouragement, Mark speeds up and is dazed at the experience of his transformation and cum boiling from four hot balls. You are so tight, Mark moans as he thrusts his new, drier cock.