A little bastard who steal anything they get their hands on. When they write they create bastard setences with their little rat hands and make them everyone elses problem. Prolly has good grades though. Theyre just really dumb.
Person A: *steals food from their friend's lunch*
Person B: You're such a fucking bastard rat. Give me back my sandwhich.
Person B: You're such a fucking bastard rat. Give me back my sandwhich.
by UrMom840 June 9, 2020
Get the Ratmug. Rat (n): pretty much everyone who has ever said anything in the Unify discord channel, most notably someone who just says X a lot (ahem)
by Esquirenicus April 6, 2022
Get the Ratmug. 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.
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."
These rats drop some nice loot!
"What you doing?" "Oh, just going to rat a while."
by Daemonwell September 2, 2008
Get the ratmug. On the Rat is a more glorified example of On the Rag except in this case the test subject is not wearing a pad, or rag for the case, no, instead a tampon. The Rat comes into it because the string looks like a cute rodent tail hanging out.
Henry- "Man she dropped them jeans and I couldn't believe it. Her tampon fell out too!
Steve- "No way! She was On the Rat"?
Henry- "Yeah. Still did her though"
Steve- "No way! She was On the Rat"?
Henry- "Yeah. Still did her though"
by The_Def_Master December 3, 2013
Get the on the ratmug. 
Often referred to as Mullet Rat, a Rat is someone who is between 14-17 years old who has a mullet. Typically Rats have lots of girlfriends as it's their instinct to try and reproduce. Rats usually live in a shit house and have divorced parents.
person1: I'm gonna fuck u up kid
person2: Ew ur a mullet rat
person1: OK, and?
person2: You are the lowest a human being can go
person2: Ew ur a mullet rat
person1: OK, and?
person2: You are the lowest a human being can go
by Detaetiousinqq January 14, 2022
Get the Ratmug.