Teen #1 coming out of arrival gate to friend: So, when do we start coughing, sneezing and squealing to freak people out?
Teen #2: Dude, people with the swine flu don't squeal!
Teen #1: Then why the hell do they call it that?
Teen #2, jokingly: Because you have to fuck a pig to get it?
Teen #1, seriously: Well, that makes sense!