a weird motion of the head that is only necessitated by the ridiculously long piece of shitty looking, greased-up hair that is slicked to the faces of the majority of guys (?!?! hard to tell...) that are obviously too emo for their own good. can be witnessed most often at taking back sunday shows and bands of the like.
hot guy who refuses to look like a complete moron: "hey, what's wrong with that kids' neck?"

hot guys' friend: "i don't know, it appears as though he has some sort of nervous twitch"

hot guy who refuses to look like a complete moron: "ohhh nevermind! look at those skinny pants and idiotic checkered converse! it's just an emo kid with stupid hair doing the emo hair flip"

hot guys' friend: "phewww! i thought we were going to have to call 911 there for a minute!"
by Emoness August 9, 2006
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