sphincter grease /ˈsfɪŋktər - grees (n.):

1. The resulting oily residue as having been rendered from an abnormally abundant and unkempt conglomeration of "swass" (aka. ass sweat).

-This advanced state of natural anal lubricant can typically be found on most hippies, destination vacation attendees, and hobos, and is commonly noted as the 2nd natural state of anal condensation, the first being "swass" and the 3rd being "ass butter." Sublimation is possible in extreme cases, however highly unlikely as sphincter grease plays an integral role in springboarding swass into a semi petrolic, pre-gelatinous state necessary for the achievement of ass butter.
I wouldn't be sliding all over this god damned linoleum car seat if it weren't for all this fucking sphincter grease
by Def Batface April 9, 2009
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The almost magic-like phenomenon when someone who needs to take a really bad poop gets within 20 feet of a toilet and immediately they have an almost uncontrollable urge to crap.
Dude I was flexing like Mr. Universe on that road trip and when I got into McDonalds my radar sphincter went off and my turds were coming out like people in a burning building.
by T Macalicious November 24, 2010
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A tight ass.
a) resulting from being in a tense or pressured situation
b) being uptight or generally harsh
Mike is totally sphincter tight about his job review.

Dude, my dad is being completely sphincter tight about letting me use the good car Saturday night.
by todh November 6, 2007
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Someone who likes getting pounded in the butt.
She was on her period, so she just asked me to do her in the butt; that fucking sphincter slut.

by Sven, Miles, Scott, Paul July 10, 2006
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When ones sphinster muscle has been clenched for an extended period of time causing the sphincter muscle to contract and relax rapidly thus resulting in loss of clenching ability where by feces is released through the anus.
While Greg was boating in the middle of Lake Arthur he had to poop, he clenched for so long that he finally succumbed to sphincter fatigue and shit his shorts!
by butch8069 August 30, 2011
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adj: a polite way of saying asshole
well hi there sphincter boy
by Owen July 1, 2003
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having one's head up their ass
That moron has his head so far up his ass he's wearing a sphincter necklace!
by ajjrcj August 29, 2010
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