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a person who does something fuckin dumb or in a stupid way. used to describe someone who is the least important of a group or someone who everyone hates
"He's always just sitting around and never wants to come hang out"
"yeah hes such a rat"
by the rat12345567 March 31, 2009
hairy vagina.
hey, i've got my rat out for you.
by lovecraft69 March 28, 2009
A fart, especially a rippingly loud and long one. So called because of the sound... "RRRRRRRAT!!"
I ate beans and rice for dinner last night and now I've been cutting rats all day.

"I just heard you rip a rat right then, you nasty bastard!"
by For Whom the Bell Trolls February 07, 2009
Any spawning non-player characters NPC that exist in massively multiplayer games MMORPGfor the human player to kill. Generally low ranking baddies who are quite easy to kill. Take off on the classic first enemy of so many role playing games RPG, the (nearly) harmless sewer rat.

The act of killing rats.
5 rats just spawned near me, help me waste them!
These rats drop some nice loot!
"What you doing?" "Oh, just going to rat a while."
by Daemonwell June 15, 2006
Slang for a ladies vagina.
"Get ya rat out! WHEY!"
by Loobu69 February 24, 2009
RAT:(Rods Asshole Theory) states that the reason there are so many ass holes is the fact that every family must contribute at least one asshole to the asshole pool,some contribute more, a few contribute the whole family
" Man there are allot of ass holes out on the road today must be R.A.T. at work"
by romicl July 10, 2008
someonee whoo snitchess
someone that tells on someonne
Briantappin is the biggest rat in Saugaa
yoo whos the ratt ..brian..yoo kill thatt stupidd ass fuckinn snitchh
by jamalaquan September 30, 2007