look up any word:
3. Koser
A big peice of shit, also known as "Mike", or "uni", or "Koala Bear". All mean the same thing. An asshole.
Your as dumb as a koser!
by DeadzeroCustom Aug 18, 2003 add a video
1. Koser
When you go to the bathroom to take a shit and instead of it being enjoyable. it feels like the world is ending if only the smell dosent take you first.

It may often splash up, as a final "fuck you" which makes the wiping process that much worse.
X:Dude I dont know what i ate last night but I just dropped a koser and am still surprised im here.

Y: Yeah man, those really can ruin not only a day but a week.
2. koser
for something to be nasty, not right or just something you wouldnt do
oh my goodness did you see her nappy hair, i swear that aint koser
by chanae Nov 22, 2003 add a video
rss and gcal