An imbecile, or douche, that works in the same office as you.
My douchemate just spilled his soup all over his keyboard.
by aeamek July 06, 2006
A roommate this is a total douche. He (or she) is capable of stealing food, not cleaning up, and very rarely bathes.
Ryan, stop being such a douchemate and clean up your dishes.
by SteveSyf March 11, 2010