Self-reference and breaking the fourth wall.
"You have no idea how good you look right now," Roy said.
Ed's heart began pounding in anticipation of the rush he'd feel when the process was over.
"You can't do that! This is a shounen series!" he hissed.
"I can't be this old and still a virgin," Ed snickered. "I mean, you've been with someone, right?
"You know it's a good thing I heal almost immediately, because otherwise I'd be so sore, I'd never get anywhere in the story."
He could imagine the words Fix typed as coming from his brother, and it afforded him a little bit of indulgence in his horrible, sinful, uncontrollable urges.
"Oh yeah... Huh!" Ed looked around, brightening. "Wow, it looks a lot different upright and not burning."
This was getting crazy. He knew that his college years ran equivalent with his sexual peak, but honestly?