You whimper and moan at the feeling of (Insert Your Name Here)'s slim body pressed up against your bloated belly while his hands explore your soft curves. As his hands caress your moobs your hands move from his butt and into his pockets in an attempt to grab the Wishing Powder from him. He quickly squeezes your moobs as hard as he can causing you to howl in pain and he steps back while you rub your chest.
"Trying to get this?" (IYNH) asks as he holding the Wishing Powder bottle in his hand with a disappointed look on his face.
You feel yourself blush from embarrassment from being caught red handed.
"I wonder why you were going for this?" (IYNH) asks unlocking the stall and slowly walks backwards towards the bathroom entrance," Maybe it's because you don't like being a fat guy.. Hmmm... I can change that. I can make you enjoy being a fat guy no problem. Or maybe you feel too skinny still. I could help you there too."
By this time he's reached the sink and readies a paper cup and fills it with water and sprinkles a little Wishing Powder in. What does he decide to wish for?