Dump Butt 

When a person has overly large pants on and they sag down as if there were a dirty diaper inside.

"Kate's shorts were so large on her bottom, she had dump butt"

Dump Butt by Golden Lady January 26, 2014

Dump one in the butt 

The act of blowing ones load in the other party's butt

"Bro that chick was so easy she let me dump one in the butt on our first date."

Dump one in the butt by Juhmanda December 19, 2008

butter dump

Inserting multiple sticks of butter into ones anus and letting it melt. Then shitting said butter onto popcorn which has been strategically placed on the other persons chest.

Wow, my butter dump was so nasty it smelled like a dead child... but at least the popcorn was tasty.

butter dump by kevinlittryder July 5, 2011

button dump 

A tiny poop.

Give me two minutes, I've gotta go take a button dump.

button dump by 4pillows March 28, 2016

dumpbutt 

When a womans butt is saggy, flat and generally offensive. Such butts are neither round and supple nor has any hope of such glory. Dumpbutts look just as they sound. The cheeks often have a square droop to them as though they had a load of poop in their pants but just kept on going without changing thier pants. Frankly it looks like their butt is a diaper of flesh and cottage cheeze. When a dumpbutt is on the go it looks like their cheeks are flapping because of flatulance.

"My lord, is that a dead animal in her pants or does she have the worst dumpbutt that I have ever seen?!"

"Everyone run, some girl on the the dance floor just broke out the booty dancing and her dumpbutt is pwning everyone wild."

Hey, You! Yeah, the only girl in the room with a Dumpbutt! Yeah you know who you are!

dumpbutt by Lord Grosvenor June 13, 2006