Some loser who makes multiple empty threats (stabbing toes, boiling teeth etc) insults his chums, and doesn't know how to act right.
by Thegr8est July 25, 2018
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.
2. Gerald: Bro last night I was with a girl and I asked her to RAT, but she had common sense and walked away.
by Shakespearean December 22, 2017
A humanoid displaying distinctive rat-like qualities.
Zanchy is such a rat!
by RatHaterVoobly May 10, 2016
A 'rat' is a traitor, a conceiver, planner or physical participator. He doesn't sell secrets for power or cash. He betrays the trust of his team or his family hoping to save his own cowardly ass.
by Prof. PicklePHD October 04, 2020