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Bat in the Cave 

An obvious booger in one's nostril.
While touching your own nose, you say, "Hey Pal, you got a bat in the cave."
Bat in the Cave by SlimSloomy January 6, 2005

Bat in the cave 

When a man forgets to do up his zipper
Mojo thought he had his 'Bat in the cave' until Nikki pointed out that his bat was about to fly out
Bat in the cave by Laaa July 19, 2007

Bat in the cave 

When u gotta poop and you feel it coming out and have to rush to the toilet to release the beast! LOL!
I give this definition credit to my good PAL kelly h.
"Kelly has a Bat in the Cave and needs to get it out fast before it flies out" lol, i dunno!
Bat in the cave by B-Dizzle November 1, 2004
More from Urban Dictionary
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
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