mafia rat 

Definition for when you are licking pussy and you dart down to the ass for a little taste. It's kind of like being a rat for the mafia because one slip of the tongue and you are in deep shit.

My girlfriend always loves a good mafia rat.

mafia rat by mikef91 August 12, 2005

River Rat 

In poker, a fuck stick that has no pair and no draw that hits a card on fifth street "the river" to give him the best hand and suck out on another player and then brags about it. The amazing river card, making bad poker player look good since 1942. No pair, no draw, no problem!

plyr1: I called cause it was sooooted!
plyr2: You are a terrible fucking poker player river rat!

River Rat by Jim Etheridge December 28, 2005

Key Rat 

A born and raised person residing on the most humble of all abodes in Key Biscayne, one that must comply with KR rules to become one.

Kendall Characters are not Key Rats, Refs are Not Key Rats

Key Rat by Dre Dre February 18, 2004

piss rat!

piss rat: comes from the term urine vermin which was the name that the royal family called the sevents who worked in the dungeons. it was made more common in 1901 by sir p. Rick who lived on housing estate in selby.

get the fuck away from me you dirty PISS RAT!

piss rat! by the main man from that house down there! May 13, 2004

Germ-rat

An individual of mixed race, who is half German and half Croatian.

"Did you know my half German, half Croatian friend Pete is whats known as a Germ-Rat

Germ-rat by Bsequencer April 12, 2009

Dick Rat 

A dick rat is a girl or group of girls would will eat any cock they can get like a rat they scurry around looking for cock they will take whatever they can get, they especially love CFL football players

Damn Joelle, I am hungry lets go to he stamps game and get some big black cock, hahaha Joslyn you dick rat your going to be all over dem boyz, lets go get some. Hahha I love being a Dick Rat

Dick Rat by RIPPO July 23, 2010

Park Rat 

A Skier that wears super baggy, super tall tees and hoodies - They look rediculous but they don't care cause they're so much cooler and more comfortable than anyone at the ski park.

"Hey that Park Rat's lookin' steezy!"

Park Rat by Super Thuggin' April 6, 2015