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.
Something found in the inner rectum, with a disgusting smell that is surprisingly satisfying. The human manifestation of such a thing, would most definitely be a pervert. A pervert who likes to touch the Koseis of other men.
*sneaks up behind a guy taking a dump* "Hey man, can I feel your Kosei"
"Ew, get away from me perv!"
Kosei by enchilada_supremo May 16, 2015
Related Words
Kosei • Koseiro • kosi • Kohei • koser • Koshi • kobeism • Kobeing • kohsei • Kosciusko
Kohei is caring, loving, protective, kind, a good listener, and hilarious. He can make you laugh and you'll come to love over the years that you will have or are having with him. He is good in bed, and tends to be on the wild side most days. He is an amazing over all.
Wow, Kohei sure is lucky to have a guy like Kohei as the love of her life.
Kohei by Kei.3165 September 30, 2021
The belief that one person can inspire a generation to work endlessly, dream without boundaries and never give up.
Dj is showing Kobeism on the court.
Kobeism by recklesswrld January 27, 2020
Originated from the abbreviation KOS "Kill On Sight"

It's a word in online video games used to refer to people who are KOS.

It is more commonly used in the online game Roblox.
Dude, that koser just killed me for no reason.
The kosers are killing everyone.
i'm hackin all of you stopid kosers,
Koser by Mr.Koalas April 25, 2020
Kosi is a very beautiful personally. A girl that loves with all her heart. She is a lover of music. Kosi can be said to be good in bed. *wink*. She is a hugger and loves to be loved and share love in return. She is a sucker for romantic movies and all things romance. She can be a heartbreaker too, but that is just one of her many sexy characters. She is good kisser and a huge listener. Not to mention , Kosis are very attractive too. They have the ability to lure any guy if their dreams. They are often misunderstood and taken for granted. Anyone will love a Kosi. She stands out and loves to be different and unique in her own special way. Funny enough, she hurts who she loves the most. If you have been hurt by a Kosi , she probably loves you to death. She can be bossy and shy at the same time. Kosis are very ambitious and over achieving. She like to achieve a lot but isn't sad when she doesn't get what she wants. She lives to stand out to bullies and is usually the center of attraction because of her really attractive looks which is usually unaware of. She is always happy and loves to make other around her happy as well. To have a Kosi is to unknowingly have an Angel.
E.g- Kosi is definitely the love of my life.

I'd choose Kosi over anyone.
Kosi by A fucken intellectual August 17, 2019
knowledge oriented speaking and systematic intelligent performance
Why just gossip,do kossip
kossip by jignesh talasila November 30, 2009
More from Urban Dictionary
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

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
Load more