The word rat can be used as an insult or speaking of the animal.People use ‘rat’ as an insult because their comparing them to a rat.
scenario 1
Bully:Ew you look like a rat today.
Person:How? that’s an animal.
Bully:My point
scenario 2
Girl 1:EW ITS A RAT
Girl 2:EW OMG!
Some loser who makes multiple empty threats (stabbing toes, boiling teeth etc) insults his chums, and doesn't know how to act right.
"I heard there's a kid out there threatening his friends"
"Jesus Christ, what a rat"
Acronym that stands for Reveal a Titty
1. Jerry (on omegle): RAT
2. Gerald: Bro last night I was with a girl and I asked her to RAT, but she had common sense and walked away.
A humanoid displaying distinctive rat-like qualities.
Zanchy is such a rat!