lab rat 

A persons behavior or condition that is reminiscent of a laboratory rat that has been exposed to an excess of some chemical, toxin, or treatment, causing it to be or behave in an abnormal manner, rendering it useless for further scientific study.

We were drunk as lab rats.

Her boyfriend is a lab rat, 'fucker drank all the tequila and most of the beer!

lab rat by Jim Inman August 16, 2006

hood rat 

a fly ass hoe who want ma dick

ohhhhhhhh get dat hood rat

hood rat by pimp September 27, 2003

desert rat 

Any Arabic, Muslim male

Sheesh! Get a load of all those desert rats on the newsreel!

desert rat by Steviedee January 16, 2004

[swamp] [rat] 

1) A person who is undesirable or ugly. Usually used by teenagers to insult the opposite sex.

2)Usually people who are low lives. They don't have money.

Wow you really are getting bugged by that swamp rat John.

Yeah i know i don't like them but they keep talking to me.

[swamp] [rat] by Chaka-Kan February 1, 2009

Hood Rat 

Someone (m or f) who has extensive knowledge of the hood and can be found living there for a very long time/never leaving...

"Can you believe that hood rat still lives on State Fair?"

Hood Rat by miss6 March 5, 2003

street rat clowning 

making fun of people after a night out, looking as shitty as possible, wearing hats and trying to remember how u got home

im hungry...time for street rat clowning

street rat clowning by Anonymous March 25, 2003

White rat

A non-biodegradable female tampon

The hockeologist pulled white rats wrapped around roots out of the sewer line unstopping the drainage system.

White rat by Samuel Davis October 20, 2008