Kvess 

A word originating from the ancient times in the town of Vigrestad, Norway. Kvess means good, cool or awesome, depending on the situation

Norwegian: Hu jentå som går der va faen kvess!
English: That ass is the most kvess ass i have ever seen. This is the kvessest and most bælbøse moment of my life.

Kvess by Hellidian January 19, 2017

Shinjitsu ni tōtatsu suru koto wa kesshite nai! 

A somehow popular phrase said by Gold Experience Requiem (Giorno Giovanna's requiem stand) after activating it's ability "Return to zero" while Diavolo was erasing time, translates to: "You will never reach truth"
The phrase is usually used only as a reference but sometimes it can be used to hide something that you know from others, jojo fans or not.

Person A: How did you do that?
Person B: Shinjitsu ni tōtatsu suru koto wa kesshite nai!

Shinjitsu ni tōtatsu suru koto wa kesshite nai! by Frosted Fool December 3, 2019

Koesser Unit 

An indeterminate measure of time usually lasting between 1 hour and 1 week. Represented by: ʞ. Commonly used in software development estimating.

Thats gonna take at least 1 ʞ (Koesser Unit) to finish.

Koesser Unit by Koesser Unit December 18, 2010

kvass 

a very low alcohol content fermented drink made out of bread. Popular in some eastern European countries, but not well known otherwise.

It's so hot, I'd chug a jug of kvass right now.

kvass by TObject July 21, 2004

Kessa

Kessa is an amazing person, she will always be there by your side even if she is very angry at you. She can be a brat sometimes but everyone loves her. Kessa is also a very lovable, beautiful and nice, kind person.

Guy 1: hey do you see that really pretty girl over there?
Guy 2: yeah that's kessa she's amazing
Guy 3: yeah she really is amazing!

Kessa by Rebecca.emo.cat January 16, 2018

kessie

kessies are girls who don’t care what anyone thinks about them. they are very funny and everyone loves them. kessies are the kind of girls everyone wants to talk to, they can be a little mean sometimes, but who isn’t? kessies have outgoing personalities but sometimes can be a little shy. they are the type of girls that every boy dreams of going out with. if you ever find yourself a kessie, never let her go, you’ll regret it

guy #1 “do you see that girl over there?”
guy #2 “yeah man that’s kessie, she’s hot”

kessie by mysterious000 March 30, 2018

Kessen 

An insult aimed at people whose facial hair seems feathery, or people who have an interesting display of facial hair.

Yo kessen-face, yo momma is so kessen her face could lay an egg.

Kessen by Bunny_boilers December 23, 2008