"oh and one other thing Jon, drinking one cup of water will undo one change from a soda, so everything is reversible.
Well... ok but let me get a drink of water first, let me start normal," Jon said as Karyn wished up a water fountain and Jon drank from it slowly watching his small breasts disappear and his penis reform.
"ok c'mon, lets go choose a soda, i want to see you change,"
"well what about you, you have to drink one too, it's only fair, and no cokes or root beers, we know what those do."
"fine fine I'll get a grape soda" karyn said putting change into the machine."
"I'll get a Sprite" jon replied
Karyn nearly fell over laughting