The
fear of seeing someone yawn in
public, causing you to yawn, thus creating a chain reaction in your group of friends until they
beat the living $*#! out of you for starting it.
Steve: "Dinner tonight? The usual spot."
Jimmy: " No
man, I'd love to come to Quiznos, but I have serious Yawnophobia after what happened."
Steve: "Shit man, you should stay home, I'll kill you if you start that crap again like you did last week."