Lily: I don't think you should have done that.
Marshall: Lily, I know what I'm doing, all right? I'm a lawyer. I've thought about every possible scenario. I'm ten steps ahead of... Where's she going?
Lily: Probably into the ladies' room to write something on the wall about you.
Marshall: Nobody writes things on the walls of the ladies' room.
Lily: Have you been in the ladies' room?
Marshall: Of course not. Lily, I know that I have the sexual charisma of a bad boy, but I certainly don't have the manners of one.