(proper noun) A narcissistic guy who hates everyone who isn't him. They tend to rule over large groups of equally hateful people.
(v) to be narcisstically angry all the time.
(v) to be narcisstically angry all the time.
I just went to Kos's blog for two minutes and now I will once again read my laundry list of why I hate my politically adversaries!!!!!
Look out, he's Kosing out of control!
Look out, he's Kosing out of control!
by Truthington477 April 18, 2007

by CriostoirHulme August 28, 2005

KOS in prison means Kill On Sight. Prisoners who are KOS will be killed as soon as possible by other inmates. They are usually in for awful crimes, usually of a sexual nature or violence against mass innocents like children.
They will get you if you are a KOS target. If you have a peanut allergy they will slide peanutbutter under your door, and this has actually happened.
by @mrkulci November 30, 2020

by ariel gad April 26, 2006
