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Rowbotham error 

A term used as an alternative for Parallax Error.

Etymologically, parallax error is the term that you would really want to be attributed to Samuel Rowbotham, who used the pseudonym "Parallax" and have promoted Flat Earth pseudoscience belief. Parallax exists in the word "Parallax error", so it would be so cool if the term originated from him because he has made an "error". But the reality is disappointing, this term doesn't get attributed to him. Therefore, we can replace the Parallax error with the "Rowbotham error".
Teacher: Why the thermometer reading yours is false?

Student A: Oh, I have made a Parallax error.
Student B: Do you mean the Rowbotham error? Either way, but at least you don't miscalculate the diameter of the Flat Earth.
Rowbotham error by maxweber27 November 21, 2020
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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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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.
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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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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
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korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
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