Mary thought for a second and decided to use alot of man with a touch of donkey and then poured the two into the soda.
Returning to the room she handed him the soda, which he quickly began to drink as he ate his pizza.
It wasn't long before the fat started melting off of the chubby 18 year old. Mary couldn't see it but inside his huge shirt strong pecs formed and cuts of abs appeared from under the fat. A thick treasure trail moved up his abs and across his chest before moving up and throwing a few hairs out the collar of his shirt.
Mary watched as a dark 5 o clock shadow began to form on the boys face as his blond hair darkened to brown and his ears grew a few inches.
Hair quickly moved down his strengthening arms and legs.
Adjusting his seating Mary licked her lips as she saw a tail growing in one of the legs of his shorts, while a thick darker skinned cock grew in the other.
Mary was really turned on by the new man in front of her and quickly got up and stood in front of him placing her hand on his new member "How bout we go upstairs and try this new thing out?"
"Huh? Wait... what happened to me! Look at me, I am hot, but whats with all this hair and the ears? Uhh, sorry lady, I bat for the other team."
Mary was pissed, why did they always turn out to be gay! "Well, I can actually fix that problem now!" she said as an idea popped in her head.
Running into the kitchen she grabbed a vial....