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Kratom Flu 

Opioid withdrawal that is brought on by abuse of the plant Mitragyna Speciosa (otherwise known as kratom).

Kratom contains the naturally occuring drugs Mitragynine and 7-OH-Mitragynine, both of which are mu-opioid agonists. Because of this activity on opioid receptors, this herbal drug induces short but euphoric highs as well as a pretty nasty withdrawal if use is discontinued after a few months of daily usage. This withdrawal is known as “Kratom flu.”

Some users say it isn’t as bad as the dope flu you get from oxy or heroin, some say it’s worse. In my experience it’s pretty shitty either way.
Friend: Why are you yawning bro?

Me: My state made mitragynine a schedule I controlled substance so I think I’m coming down with the kratom flu.

Friend: Try ordering some tianeptine because that’s somehow still perfectly legal!
Kratom Flu by danasp_42 December 6, 2021
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Kratomflip 

Taking snus during a kratom trip/session
Person 1: Duuuude today I will totally make a Kratomflip.

Person 2: Nice man, which snus are you using?
Kratomflip by T400 August 26, 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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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.
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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.
Pee Calculus by anorlondo October 1, 2026
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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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