"What do you mean, gave me bigger boobs?" Melissa demanded. "I've always had these boobs. I think I would notice if you changed them."
"No, you wouldn't," you say. "The flashlight...it changes reality. You only notice changes if you're touching the flashlight."
"Oh, really?" Melissa asks. There's something in her tone, but you don't notice because something has just occurred to you.
You remember yourself as a guy with boobs. You know that you asked Melissa to change you back to normal; you didn't notice anything changing, but you trust Melissa. But you also remember playing around with the flashlight before. What did you change? What if Melissa doesn't remember the real you? Maybe you're supposed to be fully male.
"Hey, Melissa," you say, looking back up at her. "I think that...wait, what are you doing?" She's raised the flashlight towards you again, but seems to be carefully keeping it out of reach.
"Well you messed with my boobs," she said casually. "I think it's only right that I mess with yours."
"Wait!" you exclaim. "I was just going to tell you I don't think these are mine - I'm supposed to be a guy!"