monkey's headbutt 

When one unsheathes one's erect male member, and whips it forward, with the intention of striking a blow on the victim's forehead with the engorged bell-end.

"Listen love, tuck it in or I'll give you a right ol' monkey's headbutt"

monkey's headbutt by Davian Dent December 3, 2015

weiner-headbutt 

The act of hitting someone's weiner in a forceful manner with ones head.

Watch out he has a strong weiner-headbutt!

weiner-headbutt by Dixy Normis May 7, 2008

Flying Scottish Headbutt

When a man puts a condom on his head inside out and ferociously darts forward and penetrates his partners anus with his head.

My boyfriend dumped me as i performed the Flying Scottish Headbutt

Flying Scottish Headbutt by RawBwobwob July 2, 2011

North Carolina Headbutt

When two men are going to town on a womans boobs and they get so carried away that they accidentally headbutt each other.

A North Carolina Headbutt is a good thing.

Guy 1: Dude, me and a buddy were motorboating Courtney so good last night that we did the North Carolina Headbutt.

Guy 2: You motorboated on Courtney?

Guy 1: Who hasn't?

Guy 2: True dat.

North Carolina Headbutt by A Motorboating Son of a Bitch January 25, 2008

Rhino Headbutt 

When a kid in the 5th grade wearing a ridiculously stupid bike helmet bends down, points the top of his head at a random person, shuffles towards them with his arms out like he's about to fight them, and shouts the fact that he possesses something to the extent of "rhino headbutt." This has occurred once, at a block party on the East Coast, and hopefully will never repeat itself.

Nova: "Johnny, what are you doing with that bike helmet?"
Johnny: "I HAVE RHINO HEADBUTT!!"

Rhino Headbutt by Beaver_syrup October 21, 2017

georgia headbutt 

When you ejaculate on someones forehead and proceed to headbuttthem while screaming "ooga booga" then walk away.

Chelsea why do you have a big bump on your head? Well brad got mad at me yesterday and gave me the Georgia headbutt.

georgia headbutt by Book reading wanker March 9, 2018

Vagina Headbutt 

When a woman (usually heafty, fat provides cushion) willingly subjegates herself to "vaginal headbutting", another form of weird fat-chick pleasuring

Beatrice begged me to give her a round of Vagina headbuttings, but she was too gross...so i punched her fat fuckin face instead

Vagina Headbutt by A-Spot January 23, 2006