by buddha328 April 18, 2011

An individual (usually a guy) who is cheating and bounces back and forth between partners.
I came up with this in a dream!! I was dreaming about my boyfriend cheating on me. In my dream I asked him if his mother knew he was cheating. He said "yes, and she called me a rubber rat".
I came up with this in a dream!! I was dreaming about my boyfriend cheating on me. In my dream I asked him if his mother knew he was cheating. He said "yes, and she called me a rubber rat".
by teecaz February 3, 2012

Someone who is believed to be trustworthy who later on betrays you in some sort of manor. They are also known as liars, backstabbers, and fools.
Person 1: Did you hear what (PERSON) said about you?
Person 2: Yeah she's such a sewer rat! I can't believe I trusted her.
Person 2: Yeah she's such a sewer rat! I can't believe I trusted her.
by random.idiot.that.hates.boomer October 28, 2019

colloquial expression prominently used in Brokerage houses Specialised in Bespokes and Poker. Individuals are known to use it as a middle word, meaning a word said in the middle of a phrase.
by Scarabinio January 21, 2009

“Hey Emily you wanna go to the mall?”
“Yeah but you gotta pay for gas”
“Your tank is literally full you’re such a gas rat”
“Yeah but you gotta pay for gas”
“Your tank is literally full you’re such a gas rat”
by Buffydogg September 25, 2021

A person who chooses to spend the day in bed lounging and justifies it by claiming they have nothing better to do with their time.
by Prof.Juggles June 16, 2020

"That guy is such a fucking meme rat"
"He sent me 3 rare pepes today"
Meme rat: I am the rarest Pepe
"He sent me 3 rare pepes today"
Meme rat: I am the rarest Pepe
by The one true meme rat August 14, 2016
