Someone who lives a filthy life and knows a lot of shit. The rat will tell authorities about a crime, however they are not the ones committing the crimes themselves.
There’s a rat in my boot, who wants to rid their house of criminal activity.
If someone calls you a rat that means that they think your annoying,gross and messy all the time and you should take a shower
Guy 1: rat!
Guy 2: whatever dude (¬_¬)
A beautiful rat is a friend who's a rat just like me. My cousin is a fine example.
Someone in a game who uses annoying stratagies to win. Sometimes also refered to as mole rat
P1: *Kills P2 in Call Of Duty with a riot shield*
P2: Oh my god kill yourself you rat!
A person who says they will get you something but doesn't and gets someone else it instead
For example Osama bin Poomin was a rat for buying ChinJake an ambernick instead of his own sister