First experiment

"Let's try something more definitive. Didn't the marker's description say that it could change someone's body as well as one's mind?"

Stacey's eye's lit up with an idea and she smiled lecherously at you, reaching for your shirt, writing something onto your somewhat ticklish stomach.

"Hehe, Stacey what are you writing? Heh." You tried to hold back chuckles as the marker scratched your sensitive skin.

"look for your self." Stacey chews on the marker lid as she stares and at your body with what could only be described as unabashed want.

You looked down and saw 6 PACK ABS written across your stomach, but the really surprising thing was that you actually had a six pack of well defined abs underneath. You were no slouch, but you had never had a proper six pack before.

"Holy-" You tense your new muscles.

"-shit..." Stacey finishes with a whisper.

"Do you know what this means?" You ask Stacey, your mouth still agape.

"I can start doing the laundry on my boyfriend?" Stacey licks her lips, still entranced by your new physique.

"We can change anything we want about ourselves! Is there anything you want? Name the first thing that comes into your head." You ask excitedly, plucking the marker out of Stacey's hand.