A rat is the lowest human being to walk this earth. A rat usually does a lot of drugs (oxy contin/ heroin), has no money, has no job, does nothing with his/her life, but look for the next high. A rat is just a grimy, worthless, lowlife individual.
by yllib sippi June 20, 2012
by shawtay April 30, 2005
An overused word in some areas used to describe people who wear things like black hoodies and inexpensive clothes. It is used to describe pretty much anybody who is not a jock, a prep, a goth, or a skater. Most cliques despise rats.
by TomTheMoron1 May 07, 2006
by the slang man August 24, 2006
by gangster09 April 21, 2009