Billy downed the bottle of dark liquid in what seemed like three or four large gulps. Both the shop keeper and Stan stared at Billy in wonder as he dropped the empty bottle which immediately shattered on the floor. Billy took his hands to his face as he felt his beard disappear, and his straight black hair grew longer until it came nearly down to his ass. His face was smooth and tranformed into that of a woman's. Billy looked down at his member, rapidly decreasing in size until it, along with his balls, gets absorbed back into his body.
"What the hell... I'm becoming a girl!" shouted Billy, as the pitch of his voice got alot higher.
Billy ran his feminine hands up his chest as it began to feel smoother. He ran his hands over what were once his pecks as they began to balloon out, becoming a pair of perky DD breasts. Billy's ass became pear-shaped and smooth to the touch, and his legs and arms became smoother and not quite as muscular. Lips became full and pouty, just as the last of the hair disappeared from his body. Billy's new pussy quivered for the first time from the excitement of his change.
Billy looked down at his body and back up at shop keeper and Stan as a young woman, measuring about 5'8, with measurements of 32DD-23-34.