bin rat 

Someone of suspicious character, questionable morals and low-no care for physical appearance and general personal hygiene accompanied by an inflated but unjustified sense of self worth. Possibly reproducing and in turn, discrediting Darwin's theory of evolution.

Hey - that kid with no front teeth over there looks like a bin rat.

bin rat by la_Trent_lalalala March 28, 2010

Ricky Rat 

Ricky Rat is the name of Mickey mouse in another universe, where disney isnt an evil corporation, but disney is a failing company and DreamWorks is on top.

Conversation in the alternate universe:

Brod: Hey dude have you ever heard of ricky rat?
Chod:No bro. But did you see that new how to train your dragon movie it was GREAT!

Ricky Rat by Not a Dr.PeePee January 27, 2020

Swamp Rat 

a derogatory term used for someone usually from Louisiana or Mississippi, similar to a Hillbilly or a Redneck but from a swampy region.

That swamp rat listens to nothing but Zydeco music.

Swamp Rat by brucejones April 13, 2015

Like a rat up a drain pipe

Australian for faster than you could imagine

He took off like a rat up a drain pipe

Like a rat up a drain pipe by forfal August 10, 2004

key rat 

Someone who lives anywhere on Key Biscayne except the Grand Bay or the Ocean Club, attended KBCS, smokes the Chronic, is generally an undesirable character, likes budweiser, and has spent excessive time at the skihole.

Key Rats run it.

key rat by gman February 18, 2004

hood rat 

1. a hoe from the hood

2.a trouble maker

1. "look at that girl... shes soo hood rat"

2. "you stole your grandmothers car, your soo hood rat"

hood rat by roarianna August 14, 2008

house rat 

Someone who doesn't like to throw things out.
A pack rat.
A person who collects everything.

My roommate is such a house rat.

house rat by Robert Michael Hensel April 13, 2008