Move like a shit house rat 

To move very quickly if some thing is done wrong or just generally.

Did you see them then?! They move like a shit house rat'

Move like a shit house rat by scouselad August 11, 2010

water rat 

often mistaken for a puddle of water, water rats are aquatic mammals which can be found in the ocean, sewers and school changerooms.
They are extremely violent so if you see one, experts recommend to run away like a girl.

dude 1: theres water right behind you
dude 2: WHAT?? *runs away like a girl*
dude 1: wtf
dude 2: soz i thought u said WATER RAT

water rat by krazy klaus September 23, 2007

dirty rat 

A sexual technique where the woman lies on her back and the gentleman squats over her face while lowering his scrotum into her mouth. The gentleman must simultaneously shimmy his penis back and forth as if to simulate a rat's tail. The gentleman must also lower his hairy anus onto the woman's nose. For those who go the extra mile one can imitate a rat's gnawing sneer.

Rishbah: I was going to break up with her last night but then she let me hit her with the "dirty rat".

Kishdam: NICCCEEEEEEE

dirty rat by Unconventional Methods October 7, 2011

river rat 

1. A dirty person that lives down by a river or creek, claiming to be clean.

That river rat is so filthy.

river rat by George560 November 9, 2008

aim rat 

A person that is always on AIM. Checks people's away messages every 45 seconds. Speaks using abbreviations like lol, rotfl, lmao, jk...

That Shana she is always on AIM she is such a frickin aim rat.

aim rat by arfy June 15, 2007

mat rat 

A mat rat is a slutty high school/college student who loves hanging around wrestlers. They do the scoring and cheering for wrestling tournaments and meets, they also try to get some from every single wrestler on the mat.

"You see that scorekeeper over there?"
"Yea, she banged half of the seniors on the team"
"What a mat rat!"

mat rat by CommieCrusher October 15, 2014

Plague Rat Tail 

An item on EverQuest, introduced from the start, that sold for around one platinum per tail. This is the main way for starting players to make money. There is talk of Sony lowering the value of (or "nerfing) the plague rat tail, but this is only a rumor.

GofG has slain a diseased field rat.
GofG looted a Plague Rat Tail
GofG looted a Rat's Claws

Plague Rat Tail by [e-mail] January 1, 2006