Someone who is addicted to being in lab, constantly running experiments, and can't stop to go home even though they know that it's healthy to maintain a personal life because they find themselves chained to their experiments through an obessive personality type.
I walked into lab at 2 in the morning to check on my bacteria and found that Suzie was still running a gel. What a lab rat (forget that I was there too...)
by pendragoness July 30, 2009
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What people call a student that is part of the Labschool. People on the outside use this as an insult. people on the inside use this as a term of endearment. Labrats are some of the most interesting, funny, and awesome people in the school. The Labrat bond is like no other can't even be explained...words can't to it justice, it's just this If there are 2 Labrats in a room of 300 regular school students the labrats would subconciosly migrate toward each other by some unexplainable magnetic attraction thingy. And Labrat field trips are such kickass experiances.
"The Labrats are crazy!"
by The Anonymous Labrat September 15, 2004
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White woman who dates men of color or often socializes with people of color.

Derivations are:

1. Where most rats are gray, brown, black, etc., lab rats are often white.

2. She experimentally dates people of color.
My boy moved out of town and came home with a bony-azz lab rat!
by skandalus December 2, 2003
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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!
by Jim Inman August 16, 2006
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A person who's used for experimental reasons. Similar to the phrase "Guinea pig".
" I'm not good at braiding hair, can I practice on you?"
"No, I'm not going to be your lab rat!"
by Shayla Marie August 15, 2007
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Tested, played with, fucked over, messed with, etc.

This applies to any situation in which you can be Tested, played with, fucked over, messed with, etc.
Alyson: I think we should break up, I like another guy.
Jon: You said you'd always love me, you said you wanted to marry me.
Alyson: I know, but I lied.
Jon was Lab-Ratted

Jeff(To Jim):How was your week off?
Jim:I didn't get to leave till tuesday and had to come in thursday to do books.
Jeff: Wow, your boss lab-ratted you.
by PHS2HC2009 May 29, 2009
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An individual that will put any kind of drug through their system.
Rob: I'm seeing this new broad, I think she's going to be good for me. Does t smoke, no drugs and a light drinker

John: oh yeah.....does she know you're a Lab Rat??
by Bogus24 November 13, 2017
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