Walking into the room, Adam begins to feel his clothes tighten. First his shirt, as his pecs begin to swell. Lifting his shirt to watch the change, he sees the muscles become more toned. Distracted, he doesn't notice that he is beginning to grow slowly in hight as well...
Triumphant, he looks down his pants in anticipation, but his package appears unaffected. "Wha...?" he wonders aloud, since despite the lack of visual change he can feel a quickening in his pants. However his lover body has begun to catch up, his legs where he also spread the powder ar beginning to expand, as well as the rest of the muscles in his arms and back.
Adam continues to marvel at the changes, and notices that his clothes have not just grown tighter, but shorter as well. As he looks around and notices his new viewpoint, he finally realizes that his hight is being affected as well, gaining a good few inches. However he notices the change beginning to slow down. Wondering why the powder in his pants doesn't seem to have worked, he sits down-and experiences a sharp pain in his groin.
Quickly standing up, he looks down. Sure enough, there is a noticable bulge there-but not from an erection. His pants are far too tight for his new appendage, but the problem is already solving itself. His zipper starts to rip open, and the button shoots across the room. This change is much more rapid than the others, because of the extra powder, and soon Adam's quickly stretching boxers are all that hold his growing member.
He struggles to remove the boxers, and heads toward the bathroom again, looking back at the door. Even distracted by himself, he begins to wonder where Mario has gotten to.
But there's more time for that later. By now Adam's erection is at least a foot long, and his balls as big as oranges. Running one hand over his toned new body, his other strokes the still-expanding manhood in front of him. It's clearly more sensitive than before, and as he handles it everything else seems to melt away.