To clench your sphincter to push out the last contents of your bladder or bowels.
"I felt like there was still more piss in me, so I kept pushing until I sphinctered out the tail of it."
"Hey, we're waiting to use the crapper, so sphincter it out already!"
Something that scares you so much you suck your ass hole inside out
The new roller coaster at magic mountain is a real sphincter cruncher!!!
You leave some alphabet soup on the stove to heat up as you bend your partner over the armrest of a couch, you then pry their butthole open very wide and use something to keep it open. Once the soup is piping hot you take it and pour it inside of their dark abyss, causing an excruciatingly painful burning sensation that will leave them(me) squirming, writhing and groaning in pain or maybe even pleasure if they're anything like me. ;) Then you put ice cubes in the burning hot soup to cool it down faster, which in turn causes a painful contrast between the heat and the cold. After it cools some down you indulge on the delicious but slightly poopy vegetables and alphabet noodles, you slowly scrape up the side with the spoon making their sphincter quiver. Once you've got all the goods out you butt chug the rest of the poopy juice and they quickly run to the bathroom before the remainder of the poopy soup spills out of them all over the floor.
Chill bro: I can't wait to butt chug some sphincter soup out of your fart box later.
Non-Chill sista: Can't we just do something normal for once? I think I'm infertile after you did that upside down salsa thing on me.
A toxic, disgusting, vile fart on steroids.
If you smell one, you will die.
Jimmy: farts
Tom: sniffs. "Do you smell that?"
Jimmy: smirking "noooo"
Tom: face turns green. Throws up
Jimmy: "OH GOD! ITS EVERYWHERE!"
Tom: coughs up blood and a piece of his lung. "Looks like my times up. Bt dubs dont ever release a sphincter burp dumbass. You hold it in." dies
The closing of the butthole on your finger as you touch your sphincter in a winking motion
Nick Colvin isn't satisfied until his sphincter winks.
Loose butthole caused by violent anal sex
Chesterton Academy student 1: Hahaha shut up and go give him a propagated sphincter
Chesterton Academy student 2: Maybe we could do it on the lawn mower