Had my morning coffee with my partner this morning and got a case of the sphincter trembles, sat there smiling with fear of how this would play out.
by MellyMooster June 15, 2015

by King Shit January 19, 2003

One who makes a hobby of exploring and studying the cave that is surrounded by the annular muscle (i.e., the ass)and able to contract or close a bodily opening. A poostabber. A male homosexual/anal invader.
by Carter Jordan September 27, 2004

by Jon Williams II December 5, 2003

A shit so large, it rips one or more of the circular muscles in the anus on its way out. This usually causes bleeding and mild to intense discomfort.
Male 1 (In the restroom): Call an ambulance!
Male 2: Why?
Male 1: I just had a sphincter-buster! My anus is bleeding and I cant sit down!
Male 2: Why?
Male 1: I just had a sphincter-buster! My anus is bleeding and I cant sit down!
by BobotheClown December 14, 2008

by nasty masty January 25, 2014

Simple diarrhea, preferably brown in color. Should not be the consistency of water. More like the gravy served at Thanksgiving which consists of plenty of white flour.
After eating at KFC two days in a row the greasy chicken produced a light brown flow of sphincter gravy.
by Kevin Joseph February 7, 2012
