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1.
When someone tries to "Head Bang" to a song but do it in such an off beat or weird manner that it's just sad.
Guy 1: "Dude, check out this new song I found."
Guy 2: "Oh wow, it's cool. *wtf? I don't even know*"
Guy 1: "Alright, cut out the Bang Heading, you're embarrissing me. . ."
by Tortuga Dorian November 22, 2010
 
2.
The act of headbanging offbeat to such a degree that people starts staring at you, pondering your sanity.
Dude, look at that guy. Is he alright?

Yeah dude, he's probably just musically retarded with that bangheading going on.
by Jones-Bob June 24, 2013