Balloon Butting 

Balloon Butting is when you stick a balloon into your anus and then have a friend inflate it to induce sexual pleasure, or you self inflate using a series of tubes/straws.

Hey did you hear that Paul was Balloon Butting?
Ya! It totally burst inside of him and he pooped out plastic!

Balloon Butting by RickyPJangles May 18, 2014

buttsnoipe

A different way of calling somebody an a$$hole.

Jonathan is such a buttsnoipe for slashing the tires on your bicycle!!!

buttsnoipe by Telephony November 20, 2010

buttknocker 

One of the dozens of slang terms used by Beavis and Butt-head. Buttknocker could refer to
a)A homosexual, as anal sex is the only form of intercourse for gay men, or
b)An erection in somebody's ass, referring to pulling out and then tapping and wiping the semen on said ass.

Beavis: Shut up, Butt-head! I'm gonna play drums on your nads with my foot!
Butt-head: I'd like to see you try, buttknocker!
Beavis: Don't call me that, Butt-head! (Beavis kicks Butt-head in the testicles)

buttknocker by dilary huff April 24, 2008

Buttknocker 

1.) Term made popular by Beavis and Butthead.

2.) One who exists to knock on ass. Arguably an accusation of homosexuality.

Beavis: Heheheh, move bunghole!
Butthead: Uh, shut up buttknocker! Uhuhuhuh.

Buttknocker by C2Y October 4, 2005

Buttinsk

A word Shawna (or Nanalew on YouTube) and Tessa (or Meekakitty on YouTube) use to describe each other. It can also be used as a synonym for butt or bottom, or an insult.

"She's a big buttinsk."

Buttinsk by nanakitty February 5, 2012

Nut Butting

When a man and another man ride a motorcycle together. Named that because the one mans nuts touch the other mans butt.

Paul: Hey Aaron, wanna take a ride on my new bike?

Aaron: Maaaannn, I don't want to go Nut Butting with you.

Nut Butting by Aaron East August 19, 2012

Head-butting 

When you have sex with a pregnant female. The term comes from the fictitious contact between the head of the erect penis and that of the infant.

"How was your night with prego Sally last night?"

"Let's just say we did some serious head-butting!"

"Niceeeeee"

Head-butting by ForeverBethBredl February 15, 2010