Quote from Adrian Monk in Mr. Monk and the Marathon Man
Adrian Monk: How's it going in there? Captain Stottlemeyer: It's going great, except he wants to know what the little squeaky noise behind the mirror is. Adrian Monk: That might have been me. There's a smudge. I think it's on your side. You can get it when you go back in. [tries to hand Stottlemeyer a wipe] Sharona: I'm sorry.