What is Kooser?
1.
A kiss. A cute way to say kiss while still maintaining one's personal integrity.
Come over here and give me a kooser!
See
2.
a kook/loser.
someone who is both a kook and a loser.
combined.
can only be used when the person is seriously lame.
or seriously a kook
or seriously a loser.
its pretty self explanatory.
-"oh my god that teacher is such a kooser"
-"yeah... what a kooser"
-"you said it wrong, you're such a kooser"
See