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Kiss my fucking ass! This is an acronym that can be used either as in insult or in a sarcastic manner between friends. Generally considered to be a very vulgar term to be used in only the worst case scenarios like during on-line multi-player games.
Fuck you, kmfa! or kmfa you're lame! or KMFA-KMFA-KMFA!
kmfa by l0g1cal May 27, 2005
Related Words
kmfa • kmfao • kmfab • kmfauw
a slang for “kiss my f*****g ass”
“help me push the car up the mountain”
hell no, kmfa
kmfa by cassvass727 March 10, 2023
kiss my fat ass
boy you can kmfa!
kmfa by ialiyahh February 13, 2024
Person 1:kmfao

Person 2:what’s that
Person 1: I meant lmfao dummy!
kmfao by Cinnamon maker December 6, 2017
kmfab!! ¬¬
kmfab by Miku! April 17, 2011
Kill my fat ass otter
I can't stand my otter, he is so fat. I'm gonna go home and kmfao
Kmfao by Ifuckinghatemyotter October 8, 2019
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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