"Hey May," said Jennifer, purposefully addressing the hottest and meanest girl in their grade "remember when I first transfered here in fourth grade? I was a bit chubby and you used to call me "Moo Moo". You used to get the whole cafeteria chanting together calling me "Moo Moo" over and over."
"I, like, have no idea what you're talking about Jennifer!" replied May.
"Of course you don't!" accused Jennifer. "You were always too busy making fun of people to remember just one of your many victims. But I never forgot May! I may have slimmed out now, but that sort of humiliation never leaves your memory no matter how skinny you get!"
"Well now its your turn May! For your transformation you will slowly turn into the cow-girl I have pictured in my mind right now, causing immense pleasure with each change. Oh, and by the way May, I bet you'll love the extra "surprise" that's in store for you!