A fork of Rural Dictionary
The muscles in your ass used in the process of taking a dump.
"Ross jumped over a barbed wire fence and tore his sphincter."
A ringlike muscle that normally maintains constriction of a body passage or orifice and that relaxes as required by normal physiological functioning.
I cant think of an examplefor the word sphincter.
Use when writing a compound sentence.
I was walking down the sidewalk, sphincter then bam horse rape!
A viral infestation of asshole behavior. Extremely ubiquitous. No known cure but sure working on one.
Jeff was suffering from a severe case of sphincteritis