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coolestest

When you are cooler than the coolest
Person A - "You are the coolest"
Person B - "You are the coolestest"
coolestest by @realKoolaid October 17, 2017

Coolestest

When someone is so cool you the word "cool" is not enough.
Jo is the coolestest human being one the planet!
Coolestest by ItsMeHuzi September 19, 2023

Coolestest

The coolest of the coolest
Damn, that’s the coolestest thing I’ve ever seen
Coolestest by bishwestan June 14, 2018

coolerest 

the term of being cooler than the coolest
Valery is the coolerest of all !
coolerest by JayWuxD March 1, 2009
When your cooler than the cooler kid with the Minecraft shirt
Wow your coolester then Jimmy!
coolester by DOC ($4.99) July 11, 2017
When your cooler than the lid who has the Minecraft shirt
"Man your coolester!"
Coolester by DOC ($4.99) July 11, 2017
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
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