Mom, to boy: Did you clean the bathroom like I asked?
Boy: Which one?
Mom: (stares with what looks like a complete lack of interest, but is in fact, genuine curiosity. Where is he going with this?)
Boy: (stares back with what looks like genuine interest, but is in fact, faux curiosity.)
Mom: Did you clean any bathrooms?
Boy: Oh. No.
Mom: So which bathrooms didn't you clean?
Boy: All of them.