Sphincter 

That's your butt hole.

Me: Do you have a sphincter?
Abraham Lincoln: Ye, verily.

Sphincter by Nimic April 16, 2006

sphincter 

The muscles in your ass used in the process of taking a dump.

"Ross jumped over a barbed wire fence and tore his sphincter."

sphincter by Dave Butler June 1, 2006

sphincter 

ring of muscle on crevis

chip takes it up the sphincter

sphincter by botaf November 11, 2003

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.

sphincter by mastershake211 April 14, 2006

sphincter 

Circular muscle in the anus; can be developed in gay anal sex receivers to clamp down on the penis and give pleasure to the giver, often making them ejaculate, depending on the skill of the receiver.

Peter Goesinya always like to fuck Chuck because Chuck's sphincter muscle had been well trained and was always used at just the right time.

sphincter by Richard Black April 12, 2005

sphincter 

A derogatory term derived from the film Wayne's World.

A:A sphincter says what?

B:What?

A:Hahahahaha you are a sphincter!!!!

sphincter by Damien Hogg December 7, 2006

Sphincter 

What people sometmes scream while attacking their friends from behind, shoving their fingers in their friends buttholes.

dude, i totally sphinctered eoin to kingdom-come

Sphincter by The Numba One Solja October 30, 2006