Bangheading 

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.

Bangheading by Jones-Bob June 25, 2013

Bang Heading 

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. . ."

Bang Heading by Tortuga Dorian November 25, 2010

Boneheading

People who jump in front of, or hang out behind people who are being filmed having a photo taken off.
They often wave to get on television.

"Check out those boneheads on the news"
"Someone is boneheading in this photo"

When news reporters are on the streets, people try to get on camera and "bonehead" by waving to the camera.

Boneheading by mrmooz June 22, 2007