butt fucker 

n: one that fucks another in the rectal sphincter, and LOVES it.

I knew a dude who was a butt fucker.

butt fucker by ButeFucker April 26, 2003

Butt-yak 

VERB, An expulsion of flatus during a bowel movement that is powerful enough to throw a heavy spatter of semi-liquid feces in a muddy spraypaint fashion.

I butt-yakked so hard that I got some on the seat!

Butt-yak by The West Side Smasher April 24, 2003

butt marks 

The identation of a person's ass. Most common in chairs and sofas, when a person has been sitting in the same spot for a long period of time.

See ass groove

Charles sat around and watched college football on a lazy Saturday afternoon. When got up to used the bathroom, he left a large butt mark where he was sitting.

butt marks by dwayne May 12, 2004

butt billboard 

synonym for ass billboard. Blatant advertising on the rump of a pair of girl's shorts or sweatpants.

She was standing there in the mall, in plain view, wearing a butt billboard that said "Nasty".

butt billboard by boggler January 6, 2005

butt marbles 

small spherical shaped lumps of poo that pop out your ass spontaniously.

oh man i was riding my bike and a bunch of butt marbles sliped out!

butt marbles by charlie smith .. no ollie evan January 20, 2009

butt bling 

(n.) The bedazzled back pockets on some ladies' pants.

That bitch had so much butt bling it snagged and ripped the passenger seat!

butt bling by kindlydank May 31, 2009

Butt Lightning

Verb. The act of taking such a vicious dump that it strikes the toilet with such force that thunder is created.

Fuck dude, that's the third toilet that my butt lightning has destroyed this month. I'm never eating Taco Bell after drinking 151 rum again.

Butt Lightning by drwhite August 3, 2009