Quote from J.D. in My White Whale
Janitor: Heh-hah-hah. You drew on the wall. You drew on the wall! J.D.: You pulled the paper away! Janitor: Stop lying. It's gonna come off, right? [flashback:] J.D.: Dan, don't! That's dad's indelible space pen! And prom is in like two weeks! [flashback:] J.D.: Good evening Mr. and Mrs. Shefford. I'm here to pick up Amy for [points to forehead] prom. [present:] J.D.: Yeah. That- That'll come off. You won't have to get laser surgery or skin from your ass or anything. Janitor: Hmm?