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!
A word you use to call some one a shit stain, but with a little class.
I don't particularly like you, you are sphincter stain
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
When something makes your anus clinch up because it is discomforting.
Seeing broken bones gives me a sphincter check.
When having anal sex,you will shoot a full load in the anal cavity. You should then roll your partner over and immediately squat with your asshole over their mouth and as you squeeze off one of the biggest farts you can muster you punch her in the stomach. If done correctly a large cum balloon should shoot out of her asshole, (sperm is first in most cases but not all,often followed by fecal matter)
This maneuver should only be preformed on women of lesser stature than yourself because, larger statured women can become highly agitated and ussually get pissed when you fart in their mouth, much less give them the gut shot
Some girls dont enjoy a good sphincter bubble as much as I do.
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."
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”