Headnutting 

When you headbutt someone to death and cum into their open skull.

During the autopsy, it was made clear that the victim had died due to headnutting.

Headnutting by Laserturken April 24, 2018

headbutting me undies 

Australian term. To be on the point of shitting yourself or needing a shit very badly.

Nick: "I nearly shit myself yesterday....it was headbutting me undies"

headbutting me undies by fuelline February 14, 2018

Headbutting his jocks

When a massive big Grogan is knocking on the back door, It's headbutting your jocks.

Bill ran in urgency to the rest room after 24 chicken nuggets and 3 red bulls for breakfast. He was on a tight line if he could make it or not after his tummy got full of all that junk.
He knew if this massive Grogan that was headbutting his jocks wasn't gone from his sphincter he was going to have a mess on his hands after the exorcism of his anus took place in the porcelain throne room.

Headbutting his jocks by Rusty Trombosis March 12, 2024