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57.
disgusting squirrels without furry tails that crawl around your house looking for food
Rats carry fleas.
by supercutekid November 19, 2011
 
58.
Rat
1.Small rodent with long tail. Lives in sewers. Smells like shit.

2. A person you generally do not want to be around.
3. Piece of shit
"Man that guy is such a rat"
"That rat smells like shit!"
"I saw this guy, Chris, at the party last night. Not only did he smell like shit, but he was such a rat!"
by fuckrats January 24, 2010
 
59.
Rat
in some occasions used to describe a gym partner, a team player or a co worker
hey yo rat mind if you spot me ?
by foshoo December 03, 2009
 
60.
Rat
An alternative to rap in the saying 'take the rap', well according to Andrea where i work.

Andrea: "Vicky, i'm just telling you so you don't take the rat"
by garodeo May 21, 2008
 
61.
The acute anxiety one feels accompanying a hangover following a night of excessive drinking due to a feeling that one said or did something remembered or unremembered that was ill-advised or embarrassing or may be construed by others as ignorant or abominable. Comes in doses. Likely to be of Corkonian origin.
Fiona dry-humped the boss in front of everyone at the Christmas party; she must have a terrible dose of the rats this morning.

I can't remember doing anything bad last night but for some reason I've an awful dose of the rats today.
by Thade November 26, 2007
 
62.
rat
Rat: NPC character in a MMORPG videogame. Since rats are a common first enemy in many RPGs the term can now apply to any NPC to be hunted or fought strictly for the in-game experience points or loot.
The best rats in the game are the high level bosses.

Get that rat there! It’s the toughest enemy in the zone.
by Daemonwell October 03, 2006
 
63.
Rat
A non-union bloodsucking kiss-ass job thief. Untrained and generally stupid. Tends to hide in the shadows out of the light and squeals about how the union dues killed the profit margin of his minimum-wage job.
Rat: I can't afford any gas or food, but I ain't going to pay any dues to a union.

Scab: Huh?

Rat: Big Corporation spoon feed me what to say!
by Scab Picker November 23, 2005