Buttink 

1. Some kind of unexplained sexual act or orifice.

2. When two dell netbooks reproduce to form a microdell.

1. 'I'd like to get you right up in the ole' buttink!'

'I'll buttink your rump anyday!'

2. 'Oh hey, Dink's taken a liking to Button. Perhaps... You don't think? Let's try for a Buttink!'

Buttink by PoppyLoveheart December 30, 2010

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

buttickle 

when to have to pee and you cant so you tickle your but jsut above the crack and you'll go

i gotta pee but i cant

yo just pull a buttickle

buttickle by Danny Sway May 31, 2005

Buttwink 

A buttwink is when a person flexes their anal sphincter, causing their anus to visibly contract, effectively "winking" with their asshole. Buttwinking can be performed as an obscene gesture, or in a sexual context it can be either a sign of affection or a greeting.

To buttwink, simply use the same muscles used to defecate to flex your anus.

This act should not be confused with mooning (merely exposing your anus) since buttwinking is considerably more rude.

As Sensei Doug walked to his dojo, the rude employees of a strip mall store lowered their drawers, pointed their behinds towards the window, and contracted their assholes to buttwink at the passing martial artist.

Buttwink by Sensei Doug December 6, 2017

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