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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 

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.
More from Urban Dictionary

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026
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