the clinch 

when one has to desperately squeeze their asscheeks together because they have to shit badly

I was in traffic on the highway today and had to do the clinch for almost an hour.

the clinch by Johnny Tats August 27, 2008

The Clench 

Jaw clenching caused as a side-effect of consuming LSD. Generally not dangerous. Treated by staying hydrated and exercising the mouth. Nothing to worry about as worrying can cause a bad trip.

Luke: You just gotta watch out for The Clench
A.J. (On LSD): The Clench? Wtf is that?
Luke: You don't know about The Clench man? That shit will lock your mouth shut!

The Clench by deadheadkid92 August 10, 2010

The Clincher 

1. The factoid that seal's the deal basically. 'Case Closed'.

2. Track 1 on the album 'This type of thinking could do us in', by Chevelle.

"So it turns out there were no Weapons of Mass Destruction?" "Yeah! Here's the clincher; the President is just a dumbass that lied!"

The Clincher by Korremar July 2, 2005

the clincher 

One in the pink, and four in the stink. It is when you bend a lady over and shove your thumb in her pussy and your other four fingers up her ass.

As soon as that slut bent over i gave her the clincher.

the clincher by horse dick April 16, 2005

the clinchinator 

A CS player, often found playing on Spiral's or V13.

the clinchinator by Anonymous July 25, 2003

The Chinchilla 

See Wet Chinchilla

1. Want some of The Chinchilla?

2. I'm bringing The Chinchilla

The Chinchilla by N.J.K December 26, 2007

The Clench Instinct 

When a human dies, their final instinct is to clench their lower orifices. This is why Necrophiliacs claim that corpses are better than the real thing.

Human 1: Dude you see that girl when she was almost stabbed.
Human 2: Yeah, you could see the clench instinct kick in.
Human 1: Yeah dude, it was hot.

Stephen Hawking: My best discovery for science was and will always be, the clench instinct.

The Clench Instinct by erwkjls;lkqy54gb March 18, 2019