Sphincter slam

When you fart so loudly both your butt cheeks close simultaneously
Most of the night you want to go to the bathroom & do a sphincter slam but you don't for fear it'll wake up the neighborhood
by Faithmoriahfaith June 16, 2015
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Sphincter Check

When something makes your anus clinch up because it is discomforting.
Seeing broken bones gives me a sphincter check.
by Tropical Glyph November 13, 2017
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Sphincter Centric Theory

If the universe is infinite, anywhere could be the centre of the universe, so your asshole could be the centre of the universe.
Have you heard of the Sphincter Centric Theory? My asshole is the centre of the universe!
by jacobrh3 December 06, 2021
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sphincter splash

When your massively dense turd splashes the toilet water and proceeds to wetten your ass, in the end making it easier to scrub your cheeks.
"Did you drop something in the tub Richard?" "No, I just had a sphincter splash."
by SheistyAssCrack September 02, 2017
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Sphincter

A highly versatile muscle group responsible for many vital functions in the body.

Found throughout the cardiovascular and digestion system, it has the ability to open or contract control the movement of liquids or solids throughout your bodily systems.

It can also refer to a Bayley.

Se also: Moomoos
by Moomoosa2000 October 29, 2021
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Sphincter Twitcher

A hairy moment, such as passing silent windduring sex and praying it’s not an SBD (silent-but-deadly)
“Really needed a poo at work so I farted and almost touched cloth, bit of a sphincter twitcher
by Squickly July 04, 2018
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Sphincter of Doom

Refers to the large void situated in the main room of "Temple", the infamous multiplayer map for Nintendo 64's Goldeneye. Until the release of Perfect Dark, things would only travel out from the sphincter (eg. bullets, remote mines). The long awaited Perfect Dark allowed players to jump into or "enter" the Sphincter, creating a 2-way traffic system which revolutionized the tactical approach when fighting for the Temple.
Eric - "Shit, I saw the fuckers, they're down the Sphincter"

Jim - "Throw a timed mine!"

Eric - "Timed mines are shit! Who the fuck uses them anyway?! I'm going in..."

Jim - "You cant enter the Sphincter of Doom here! You're thinking of Perfect Dark!"

Eric - "Shit, fuck, I knew it, now I've lost them. Why is there a fucking invisible wall anyway? Why would i NOT be able to jump down?"

Jim - "Chill man, meet me at the crossroads We'll get 'em there"
by Nickeatworld March 01, 2009
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