Skip to main content
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.

Richardson-Pirrin Law 

The state of a joke at which it becomes so objectively unfunny, as its comicality diminishes to a negative state, that it reaches critical unfunniness and therefore enters a state of appreciation in humor that its relative laughability levels and social relevance begin to rise, making it ludicrously hysterical once again - thus corresponding to Newton’s 3rd Law, in which there is an equal and opposite erection.

This process is bound to repeat indefinitely, representing the repetition in our daily struggle known as life, so proportionally small that it is comparable to the size of your dick.

The rate at which a joke follows this process is directly correlative to your mom’s dick size.
Person A: “Your mom is so fat , when she fell I didn’t laugh, but the sidewalk cracked up.”
Person B: “Dude, that’s not even funny.”
Person A: *puts on fancy monocle* “Well, according to the Richardson-Pirrin Law, it has high laughability.”
Richardson-Pirrin Law by Shitsies February 22, 2023

Richards Law 

Anything can happen good, will get better!
I always love to use “Richards Law” to counteract that horrible no good Murphy’s law!

We were on a job site on Rooftop and out of nowhere “Murphy’s law” jumped at us, then to counteract it, we enabled “Richards Law” to kick Murphy’s laws ass right off the job site immediately !!
Richards Law by MiniMarley December 18, 2018
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
Load more