Headbutt 

When you go in for a romantic kiss but slip and headbutt them instead.

Emma went in for the kiss as Herbert went in, Emma slipped and headbutted him.

Headbutt by Arkole April 25, 2011

Headbutt 

to use your head as a weapon.... a move not welcome in boxing

I headbutt Mathews so hard his glasses broke

Headbutt by The_Shoes June 11, 2006

headbutt 

what a frenchy does right before running away.

A more recent example is what zidane did in the world cup

Zidane gave a headbutt then ran off

headbutt by Jesus o December 24, 2008

Headbutt 

When two men make contact with their penis heads. This is not necessarily a gay thing, but more of a common ground of respect and admiration among male friends. It should be encouraged.

Mike and Jon finished off a wet and wild game of volleyball with a nice, smacking headbutt.

Headbutt by Large Orb May 24, 2008

headbutt 

kamia the headbutt bitch

kamia almost headbutted me to death today!

headbutt by sob January 2, 2005

headbutt 

When someone's face is so ugly it resembles one's buttocks.

Butt-like head= headbutt

Ross Noble: "That's a bum-faced kid!"
Random person: "Eeewwww! He's got a headbutt!

headbutt by Liakias July 22, 2009

headbutt 

when you use your overly large forehead to knock some kid out

Also a common sign of dyslexia

or knock your self out by headbutting a door.

kid - oi bud wanna fit- *gets headbutted by bogan*

headbutt by Headbutting bogan December 3, 2015