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Acid Casualty 

"Acid Casualty" is a named applied to those who, post-LSD (just once, or lots of times) become sufficiently detached from the world they being acting different to the extent that they appear insane, or at least extremely eccentric to other people.
"Man, look at that topless old man climbing that lamp-post. I think he's got anti-war slogans on his back"

"Yeah, just another Acid Casualty."
Acid Casualty by P1711 December 22, 2008
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acid casualty 

Someone who has done Acid so many times that their brain has been damaged to a point of no return.
acid casualty by Puzant January 20, 2005
Related Words

acid casualty 

someone who's mind is fried because they've taken way too many hits of acid ("lsd")
President Bush is only slightly brighter than an acid casualty
acid casualty by Tim Wochomurka July 11, 2003
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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.
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The phenomenon where adults salivate at children's toys
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kidulting by Emotional Cruiser October 12, 2025
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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
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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.
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