CSer 

1) Word used to describe a player of the game Counter-Strike
2) A person, usualy between the ages of 8 and 12 that has the IQ between 15 and 45

Just ignore all the CSers

CSer by maxdamage January 11, 2004

CSer 

N.

a member of the website www.couchsufring.com

pl. CSers

Me and another CSer explored Rome together!

CSer by CSer in Action April 15, 2009

CSer 

Discrete way to say Cock Sucker.

I hate Bo, he is such a CSer !!!

CSer by Kyle L December 18, 2005

CSer 

A person who plays Counter Strike fanatically and often compares other games to it.

CSer is either used in a derogitory fashion within communities of other games, or just to state that that person plays "CS".

Jack's a pretty good CSer

Why don't you go back to your rank-whoring you stupid CSer

CSer by Bluehawk July 16, 2004