anal sphincter 

The butt muscle that cuts off your poop and keeps the rest of your poop in your bung.

My anal sphincter is so lose that I can't feel myself poop anymore.

anal sphincter by Scott E. Irish January 2, 2006

anal sphincter 

The ring around your bum hole that causes it to prolapse.

Oi Emma piss off before i shove my fist up your anal sphincter!

anal sphincter by highland spring April 8, 2011

anal sphincter 

Some would say quite similar to the asshole, the anal sphincter is like a little drawstring that loosens and tightens up your asshole when things are coming in and out of it.

My grandma has shit constantly flowing out of her asshole, she must have a problem with her anal sphincter.

anal sphincter by Tor Coolguy January 23, 2005

Anal sphincter 

a commonly used word to describe a person who repetitively asks stupid questions that are pointless and have no point

yo bro, does alchohol make you drunk?

stfu you anal sphincter..

but why?

epic lulz

Anal sphincter by a black caucasian August 1, 2010

anal sphinctor 

A muscle in your ass, also can be replaced in a diss instead of dick you can say anal sphinctor.

1. Suck my anal sphinctor, bitch.
2. SHIT! My anal sphinctor is killin me.

anal sphinctor by Boss Playa13 August 17, 2006