The reaction of your asshole to having cold toilet water splashed on it by a large piece of fecal matter hitting the water.
by Psypiral April 23, 2003
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A ringlike muscle that normally maintains constriction of a body passage or orifice and that relaxes as required by normal physiological functioning.
by mastershake211 April 14, 2006
Get the sphincter mug.The natural reaction of your sphincter to contact suddenly and violently when you are embarrassed by something or —especially— FOR someone else.
"Did you see that TV show with the juggler who was performing for the Queen? Wow, I sure did have a sphincter-blink when he dropped all those balls!"
by wordbird June 29, 2006
Get the sphincter-blink mug.A birth defect where one has nipples or nipple like birthmarks on each ass cheek creating an image like tits for an ass.
by Coho1989 July 24, 2009
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Get the sphincter spoon mug.through breathing and a yoga-like technique, an individual battles to remain in control of the muscles in their anal sphincter and prevent the effects of diarrea. Often practiced as a result of drinking non-bottled water, while travelling in a foreign country.
in constrained circumstances such as travelling on public transport where the only toilet is extremely unsanitary, and in fact, someone has dumped on the floor rather than in the toilet, and, desperate to go to the toilet due to the effects of diarrea or more generally prairie dogging, one would practice sphincter yoga to avoid having to go to the toilet at that time
by Danielle Goodsell September 6, 2006
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