buttoxin

The substance or stain left in ones underwear when a fart is mixed with diarrhea.

The buttoxin in your underwear just won't come out.

by Roland Warren October 30, 2006

Buttoxin

When a person releases a particulary nasty smelling fart into the room.

a fart which is released from the buttocks, which could be described as being toxic.

hence the name buttoxin.

Butt + toxin/toxic = buttoxin.

Jim: *loud fart*

Jenny: "eugh, that smells disgusting!"

Jack: "that's toxic man."

Jim: "that's a true buttoxin!"

Jenny: "so nincompadrae!!"

by ClareyMcfarey :) March 02, 2010

Buttoxins

Toxic gas, liquid or solid from someone's buttocks.

I could smell someone's buttoxins in the elevator.

by Jack P August 09, 2014

Buttoxin

A nasty fart or hella shit

Ah, that fart was Buttoxic

Damn, that Buttoxin is gonna kill some one

Caution, bathroom closed due to a spill of Buttoxin

by pairofpant January 18, 2010