Keep it kosh

To play it cool or smooth in a tight situation. Origin: Kosher, Kosh is short for kosher.

Dude #1: Dude, isn't that Kristen coming this way?
Dude #2: Yeah dude, she's smoking hot. What I wouldn't do to get with her.
Dude #1: Dude. Just keep it kosh man or you'll blow your chances with her.

by DurbanSun November 2, 2009