rat bastard 

A bastard who is characterized by devious and base intentions.

That rat bastard who ripped me off on the car deal also hits on my sister.

rat bastard by Will March 17, 2003

rat bastard 

A despicable person.
Someone easy to hate, usually for a good reason.
It is normally related to either extreme personality flaws or actions commited counter to human decency.

"What kind of rat bastard psychotic would play that song right now, at this moment?"
- Raoul Duke (HST)

rat bastard by Vladicus March 14, 2005

rat bastard 

someone who is a little shit and acts like they own the world

OMG look at Maia, that rat bastard.

rat bastard by bad.ashley22 November 18, 2019

rat bastard 

an completely wretched and despised person

Get off my case you rat bastard.

rat bastard by Light Joker November 15, 2004

Rat Bastard 

A supposed human who is actually lower that a human being, but to make things worse, is able to pretend to be a human being. Someone who'd likely steal from his own brothers and suck up to his in-laws

That Rat Bastard PW sucks his stupid mother-in-laws ass while never visiting his own momma

Rat Bastard by Krakz Artimius December 1, 2006

Rat bastard 

the most annoying little shit on the earth who bugs you all the time

Jon Finchen AKA the greaseball
Dan Barber or wee man

Rat bastard by CrispyFried May 14, 2003

rat bastard 

used to describe people or things that piss off or annoy you in anyway. used only when describing the object and not to directly insult it. not to be yelled or shouted.

coined by "The Chief", June 2000 RIP

In response to the spider creature that knocks you over in Legend of Zelda:
"aaahh you little rat bastard"

rat bastard by Chris and Andy August 6, 2008