sphincter surprise

massive surprise anal insertion

my gay love interest (luke dattilo) gave me a sphincter surprise for my birthday

by VintageCorn April 24, 2015

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 22, 2015

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 1, 2017

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

sphincter retardation

When your ass hole doesn't know whether it should shit or clamp up.

Bradley scared Andrew so bad that he had a case of sphincter retardation.

by Dizzy D. May 3, 2018

sphinctoral dilator

A medicinal/mechanical item used to reduce/eliminate embarrassing noisy farts in public. Just like a bronchial dilator, it serves to further widen/open a bodily "pipe", but just at (ahem!) the "other end of the equation". Having this artificially-unrestricted "exit" permits any produced methane to be immediately vented in a continuous and "silent" outflow, rather than the gas's being internally bottled up in an increasingly-pressurized "pocket", eventually to come blasting out in a horrid raspy spluttering explosive expulsion that either greatly offends or uproariously amuses everyone within earshot, and causes acute humiliation to the unfortunate farter, especially if his whizzpoppers are especially odiferous and/or frequent.

Baked-beans-and-stewed-cabbage-loving dude: Wearing my specially-designed sphinctoral dilator (a three-inch-long thick-walled aluminum tube with smoothly-rounded screw-threads for easier insertion) isn't exactly the most comfy experience, but it sure beats the offended glares and/or derisive snickers from others that I used to get whenever I'd venture out in public after a big meal.

by QuacksO July 3, 2018

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 4, 2018