Slow-motion Headbanging 

When one is sleeping in class, and his/her head bobs up and down at random, providing a source of distraction and entertainment for everyone else in said class.

Hey, did you see that kid slow-motion headbanging in Math class today? What an idiot.

Slow-motion Headbanging by ohmylanta! May 24, 2009

windmill headbanging 

To headbang in a circular motion.

When someone's listening to hard rock/heavy metal reaches to an epic level, normal headbanging can't coupe with the sheer power of it. That's when windmilling comes to play.

Goes great if the person has long hair and a brain as strong an Air Force pilot's ('cause it'll gives you some fucking powerful headaches if you're not careful).

Windmill headbanging, harder to do but much more fun to watch than normal headbanging.

"Fuck, man! Listening to Amon Amarth, Morbid Angel and Cannibal Corpse is giving me the urge to windmill my head off!"

windmill headbanging by RROMM August 28, 2007

headbanging 

swinging your head up and down as hard as you can as if to almost rip it of, while listening to heavy metal music

Yeaaaaaaaaaaaaaaaaaaaa i was headbanging to some metallica, and i got whiplash, it was so fucking hardcore

headbanging by GIANT(in my pants?) May 28, 2008

Headbanging 

someone who sits in a car and when there dad breaks and then they throw there head back and there moobs fly backwards and hit them in the face

gregory sat in the car and he was headbanging
or

bethany was sitting in class headbanging
or

jayne was sitting in her councilling room headbanging

Headbanging by mygrandmaandyourgrandma October 23, 2011

headbanging 

On a roller coaster, when your head bangs into the OTSR's

Ow! Ninja at Six Flags Over Georgia has alot of headbanging!

headbanging by Russ December 12, 2004