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Spike Rat 

A small rodent that lies underneath the folds of flubber of an obese man. The rodent survives in hot moist areas of the body living off of sweat and missed food particals. If is very docile and can be easily trained. Can grow up to the size of a toy poodle.
Did you see the Spike Rat that was living between Billy's flubber? I think the Spike Rat was eating cookie crumbs.
Spike Rat by mioak September 20, 2011
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Spice rat 

A lover of spicy food
You know that guy Michael, I hear he’s a real spice rat
Spice rat by Face Jam Fan February 9, 2022

rat spice 

when the pussy that ugly it's remarkably disgusting
guy 1: you get it nice and tight?

guy 2: nah she got rat spice
rat spice by nugget of herpes February 20, 2019

spine rattler 

Another term for vigorous anal sex. So said because it will shake your spine.
"Hi doll! Do you fancy a spine rattler? Huh?"
spine rattler by Wizards Sleeve February 3, 2007
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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