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.

Cockasaurusrex 

A dinosaur from the jerassic period with few preserved fossils, its cock is so large it is said to be able to knock out any dinosaur with one hard swing of its massive penis
cockasaurusrex defeated the spinosaurus again! damn!

CockAsaurusRex 

CockAsaurusRex the name of random hard-ons throughout the day thinking about big ol fine titties
Bro her titties are big and so fine when I think about her (them) I get random hard-ons throughout the day, it's like CockAsaurusRex comes out of extinction !

Cookasaurusrex

A cooked Tyranasaurus Rex.

Cross between a cooka and a Tyrannosaurus Rex.
Look at old mate over there he's Cookasaurusrex. He needs to go to bed aye bro.
Cookasaurusrex by Dann Mann January 29, 2022

Cucasaurusrex

A poorly endowed dinosaur with a fetish for watching its mate be serviced by a bigger, younger dino. Often can be found in the odd single chair in the corner of every hotel room.
Crew: What’s that chair for in the corner of the room in the hotel?

Leo: Cucasaurusrex man, been there since the cretaceous period.
Cucasaurusrex by Alm0st Fam0us August 15, 2026
More from Urban Dictionary
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

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
Load more