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Firebone 

The word ‘Firebone’ is used to identify petrol based engines. Most often used directly to describe pistons which are tuned by hand and used in vintage racing motorbikes. The fuel explodes in the cylinder creating fire, and the piston connecting rod resembles an arm bone. Hence ‘Firebone’.
That old v-twin ‘Firebone’ is super quick, ever since you tuned the exhaust ports and cylinders.
Firebone by Vestigia nulls retrorsum February 23, 2022

firebone 

The word ‘firebone’ is sometimes used to describe the energy, focus and motivation people conjure up in themselves, in their minds, to perform amazing feats of strength, daring, skill or endurance. Much like having a burning desire or force within their bodies or bones that push them to excel. People that can summon this kind of inner strength and purpose are thought to have fire in their bones. Many professional athletes, daredevils, adventurers, extreme sports participants often exude firebone characteristics. Surfers, skateboarders, motorcyclists, motor racing drivers, BMX riders, MTB riders, Parkour, Paragliders, Kite surfers all exude firebone personalities. Firebone strengths can also been seen in emergency workers, soldiers and those that perform at the highest levels in their chosen sport or profession.
Now that’s what I call a ‘firebone’ performance, he executed that motorcycle jump with super human bravery and skill.

Firebone 

Firebone is known for its distinctive 'Defiant Tiger' prints. Firebone is inspired by bikes, boards and vintage machines. Concepts are often based around inspirational and rebellious themes. Illustrations are a mix of Japanese tattoo style, comic book and vintage motor racing.
Firebone is an underground British Designer. Be bold and stay defiant.
Firebone by Vestigia nulls retrorsum December 14, 2022

firetoaster_ 

The biggest dicked male in the world. Paved the way for many pornstars not saying who and gets hell of grills. They call him mister steal your grill not because he is black because he can kill you with one insert of his massive cock. The color blue is ghey like the thing called Nubstty and FireToaster_ is not ghey. He flips dicks and bangs chicks a man once said that before but fuck it this is the urban dictionary so im hella thicc with the stick.
FireToaster_ can never be prego because he is a male that donkey punches chicks.
firetoaster_ by Not Toaster_ October 29, 2018
a burning sensation in your toe after pleasuring an infected vagina
"oh fuck, i have got a firetoe, i knew i shouldn't of toed that slutty whore last night"
Firetoe by fuckmetillibleed March 2, 2017

firestone 

to discard a used condom quickly onto pavement to avoid embarrasment/consequences, "where the rubber meets the road".
I pulled a firestone when Mom was getting in the car.
firestone by Laurinda May 14, 2005
More from Urban Dictionary
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
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
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