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1) one who roots out all roaches that are of the joint, blunt, etc.

2) a young man with abnormally tiny penis. Sniffs out roaches!.
jake the roachrat
roaches magically walk the fuck away.
by Dr. Goldfish August 19, 2008
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Roach Rat is a person that does things that are disrespectful, and dirty in general and very greedy and robbing for weed
Yo man that guys a straight up roach rat goof, he stole all my roaches.
by Spencer P M January 19, 2007
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