When your stuck in that awkward situation of puckering your asshole because it itches and you don't wanna scratch it for fear of stink finger, and your holding your buttcheeks together cause you also have to take a shit. hence clinching both.
I was sitting at work assisting a customer and i had to shit and my asshole itched. so i had to deal with the double clincher cause i didn't wanna dig in my ass at work.
by swiftverbicide2 December 16, 2009
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When you are about to take victory, but fail to win near the end, especially when victory should be assured. This term is usually used after repeated occurrences.
"Innumerable chances came Parrott's way in the remaining frames but the 1991 world champion was gripped by "clinchers disease" - the inability to clinch winning positions."

He went on to lose this match, even though he was winning by 5-1 in a first to 6 match. His opponent took the next 6 frames in a row to win 6-5.
by Fleecemaster October 4, 2012
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To produce a colossal turd that seals the deal.
I'm next in line for the can, dude - I'm about to Pinch a Clincher!
by IDStarGirl October 7, 2018
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A quip, joke, remark, or action that is offensive enough to make the listener(s) gasp or go silent. When the questionable comment is said, the listeners' ring of muscle around their anus contracts and continues to hold in a tight grasp.
Janet Jackson's wardrobe malfunction and Kramer's (aka Michael Richards) racist tirade are both great examples of a sphincter clincher.
by Seriously Funny December 16, 2009
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A fat bitch who has a large vagina, who could crush you with a mere flex of her pelvic muscles.
Jimmy: Holy shit! Shes fat as fuck!
John: I bet that bitch is a cunt clincher!
by Auhxy April 5, 2017
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When something is so suspenseful, tense, or exciting that you clench both butt cheeks together the whole time. ie sports game, movie, tv show
Did you see that Bills/Chiefs playoff game last night? What a cheek clincher!

I watched Avenger Endgame today, it was a real cheek clincher!
by JoeG86 May 5, 2022
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