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a nickname of a girl named 'katherine', where by her initials spell KEV.
"Hey Kevster, hows it going?"
"Not bad Sam, fancy a j?
kevster by theBroom April 27, 2008

the kevster theory 

The kevster theory is an specific theory created by a high school student in 2011 named Kevin Fernandez what this theory is, is a way of making friends that will love you for ever it starts out when you meet somebody you act shy make them think your shy after you convince them that your shy you will explode like a bomb and act crazy and you'll see this works its not fake its real I have been using this for years all the friends I have made are still my friends and think i'm hilarious try it! prove it for your self next time you meet some one new!
Becky: look at the new kid he is so shy he doesn't talk to anybody.
A WEEK LATER
Kevin: boobs penis vagina
Becky: haha you wanna be my bff?
Kevin: sure! ;) The kevster theory works no doubt!

Kester’s Balls

A term used to denote signs of depression and complete hatred for sports;Volleyball and recreational Volleyball
Gabriel:”Hey,are you going for the friendly tomorrow?”
Chester:”Nah fam,I got kester’s balls”
Kester’s Balls by Crayson February 8, 2019

Khaleesi Keister

A perfect arse

An arse that defies gravity

Not too big, not too small, not flat, perfectly round
She has a khaleesi Keister
Kevser, a perfect girl. She is kind, smart and beautiful. Her personality is as beautiful as her physic. She is full of happiness and kindness.
Someone: Kevser is so perfect a wish i was her
Me: Me too...
kevser by Jiminsabs February 23, 2017

soupy keister 

An anus filled with mushed feces.
Am asshole that was never wiped and is filled with excrement with the consistency of thick soup.

Diarrhea Butt.
I Can’t just use tissue or a wet wipe, I need to shower to clean this soupy keister.
soupy keister by Fatman Slim March 2, 2022