Being cinched aka tucking is the act of a drag queen pulling back his genitals to create the illusion of having a woman's vulva. A tuck is often held by panty hose, duct tape or tight underwear.
"Are you cinched?"
by Skylark_774 March 24, 2017
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The universal definition is "to get something done," but it can be stretched to mean "to close the deal," "to sell," etc. The opposite of procrastinating.
Person 1: I'm almost done with this report! I'm so close to cinching the peet!
Person 2: Yeah, dude, cinch the peet!
by The Best Bean April 23, 2015
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Similar to "brown bagger", but the whole body, not just the face needs bagged or "cinch sacked." May even pertain to someone's overall rotten personality, appearance and general place in the world.
Me: "Hey man, that dude looks horrible."
You: "What a cinch sacker!"

or

Me: "I hate that stupid biatch at work."
You: "Someone should throw a cinch sack up on her."
by FBite March 2, 2008
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A nice tight little bunghole, anus, oring, balloon knot, tangy leather donut.
Carl's new girlfriend liked a little anal play. Carl couldn't wait to get home from work and get balls deep in her Cinch Knot.
by Eaton Holgoode April 19, 2015
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In American slang this phrase means a dead certainty.
Homer: I have 50 bucks riding on this game.
Marge: Homer, you promised me!
Homer: This isn't gambling Marge. It's lead-pipe cinch.
by Jara Dosek December 29, 2006
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The main religious act of the Butthole Bandits, cinching involves sealing ones anal cavity with superglue and putty.

The act is performed in order to ensure that no sins are committed when one poops, and that holiness is kept inside.

Cinching is completed as an initiation process and patrons of the butthole bandits have the act completed by the butthole brigade.

Guaranteed attendance to heaven within two weeks of being cinched.
Susan! I’ve been cinched recently and I feel like a new woman! You should think about getting some cinching done as well!
by Pyjama pants January 2, 2020
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The act of munching on somebody's gooch.
"Do you want cinching, baby?"

"Ooo I love it when you cinch me"
by Gash Finder May 27, 2021
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