The muscle that holds your asshole shut. To call a person a sphincter muscle is very offensive. Your basically calling someone a asshole.
Man check out that woman over there yelling at those kids for fishing near her precious boat. She is a sphincter muscle and needs to stop talking shit.
by jimmybomm October 19, 2020
Get the sphincter musclemug. by sweetnnnspicy July 8, 2010
Get the Muscle Suckermug. by Da Prof March 22, 2005
Get the lunch musclemug. "That cricket ball hit me square on my Mister Muscle! Good thing I was wearing the old jelly mould!"
by Bugzapper March 2, 2014
Get the Mister Musclemug. by rainebohbrite October 14, 2011
Get the boyfriend musclemug. by rachel brown January 4, 2004
Get the neck musclemug. the muscle in between a womans legs...also an insult to call someone who is not acting in accordance to what you want them to fucking do
i was lickin on this bitches cunt muscle...she was being such a cunt muscle because she wouldnt suck my dick after i put it in her ass!
by kushstunter69000 April 22, 2009
Get the cunt musclemug.