headbagging 

At an concert or arena, someone standing behind you
accidentally or purposely places their junk on your head.

Dan was at the arena, Winston standing behind him talking to Carl. After several minutes, Dan realized that Winston's junk was resting comfortably on Dan' head. Needless to day, Dan was unimpressed. Winston headbagged Dan. Prime example of a headbagging!

headbagging by Headbagged.for.realz November 3, 2013

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

Headbancing

The Act of Head banging while dancing to extreme electronic music.

now this is what i call headbancing music

Headbancing by Dj Don't Stop August 1, 2010

HandBagging 

The fine art of taking a Dump in someone's handbag without them knowing. A great way to impress your dissatisfaction with someone for leaving their handbag somewhere accessible. Not advisable on first dates or when taking elderly relatives to dinner.

Handbagging is often preformed on a night out when a really annoying girl (or guy (doesn't even have to be annoying (just has to have a handbag))) and you get the opportunity to grab a handbag on the way to the bathroom or anywhere else you are comfortable doing 'the deed'. Not being caught is usually advisable.
Also good for a competitive game with mates seeing who can get the most or the best bag!

HandBagging by Gymsox June 13, 2011

headbanding 

The act of being high and the activities that follow

"Dude i was so headbanding it last night while writing that paper"

headbanding by JoeyCrac November 23, 2009

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