A Karin 

A woman who is a mom, an think she is entitled to everything she wants, she will most properly yell at you to bend your will. If you encounter "A Karin" then just keep in mind that her parents dropped her down the stairs as a child, but watch out "A Karin" can be violent. She has the ability to not wear facemasks and yell till your ears bleed.

Don't be a Karin

A Karin by yeetboi2542 August 10, 2020

Ragin like a kagin 

some 1 who rages or rage quits while doing something

dude wtf where did u put my shoes.....dude stop ragin like a kagin and calm your mits ya bogen

bogen(a dirty native who trys to act black,and trys to do drugs)
mits (man tits)

Ragin like a kagin by suckmymit.com September 2, 2011

Akarin 

Something you say to show someone they lack presence.

This comes from the anime Yuru Yuri.
Sometimes, when you see Akari, the sound effect "Akarin" is played. Then she disappears leaving behind not much more than a dotted outline.

Person A: *never says a thing, never gets noticed, always left out or forgotten"
Person B: The moment you hear "Akarin", nothing but a dotted outline will remain of them.

Akarin by Giita June 5, 2018