i couldn't give a rat's ass 

An expression meaning I couldn't care a less or give a shit about something.

Worker: "I was late to work because my car broke down goddamit!"

Boss: "I couldn't give a rat's ass if you got anally raped this morning! You're fired!"

i couldn't give a rat's ass by Human Pickled Punk May 15, 2016

street rat 

jake.g

he looks and acts like one

street rat by ben readings October 21, 2003

frat rat 

Any member of a college social fraternity. Usually derogatory.

#1: I heard John joined SigApes.
#2: Yeah, he's become a frat rat.

frat rat by Doug Hall October 4, 2006

dead rat 

when a male sticks his penis in between his legs and bends over to show the "rat" in his ass. a backwards mangina.

"Hey! Luke just showed Luke G the dead rat."

dead rat by Zach February 21, 2005

skid rat 

A girl (often a medic / cook / campie) who has sexual relations with a constant stream of different oilfield workers. Basically, an oil patch slut.

Bob: I fucked that medic, Rose, last night.
Tony: I fucked her last Saturday, she's such a skid rat.

skid rat by OilPatchLucy August 9, 2012

hood rat 

A girl, that is known as a bad bitch, one to be known as loyal to her main man, knows how to bring in money, not dependant on the man in the game, she knows how to get her way along in life.

That girl right there is my hood rat

hood rat by Craven. October 3, 2008

Musketeer Rat 

Commonly Used to describe one's genital.

John: My Musketeer Rat is itchy, can you help me out please?
Mary: Sure!

Musketeer Rat by slaffytaffers October 19, 2009