look up any word, like blumpkin:
 
2.
A general douchebag, usually one that already has a girlfriend but hits on yours nonstop. Can sometimes have a dream about banging your girlfriend and then telling everyone about it. You do not want to be one of these people.
Guy 1: Dude that guy is all over my girlfriend

Guy 2: What a Kocher. Lets get him.
by Backoffmygirl May 03, 2010
 
1.
When a person steals an insecure tool’s girlfriend
Guy 1: Hey! That guy is stealing my girlfriend.
Guy 2: He’s totally pulling a kocher, let’s cry about it on urbandictionary.com
by urGFwasGreatlastNight August 21, 2011
 
3.
a closeted gay man who hasn't come out of the closet; mooches off others, and has a gnarly receding hairline. usually seen at your local bar passing out business cards to ugly chicks in order to get laid.
Man! Did you see that guy at the bar?? Dude is acting like a Kocher!!!
by aman-daht January 01, 2009