the most annoying little shit on the earth who bugs you all the time
Jon Finchen AKA the greaseball
Dan Barber or wee man
by CrispyFried May 14, 2003
Get the Rat bastard mug.
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"
by Chris and Andy July 14, 2008
Get the rat bastard mug.
Omg he is so bad and stinky. He is live in side of the sewers and is so smelly omg. This smells really bad and I think he likes obama and he likes joe joe bidan and he like s donild trompand because he is a rat stinky. he eats trash yeah but his faverite food is ToES AND FEET! rat badterd love feet yummy.
The Rat Bastard is being cringe again!! Get the bug spray......
by CindyDriver October 20, 2020
Get the Rat Bastard mug.
A degenerate little shit who also happens to be sly, but in a rat-like way.
Blaine is a rat bastard because he stole my side hoe.
by Stevie Buscemi July 12, 2019
Get the Rat Bastard mug.
An individual who intentionally pisses others off, usually to their face. Similar to a Snot Nosed Punk except they typically follow the rules. Is also a popular form of Dad lingo.
Katelyn: Hunter keeps scaring me every time I walk around that corner!
Erin: He did that to me too! He's such a Rat Bastard!!
by dan_gleewang January 16, 2021
Get the Rat Bastard mug.
a person who intentionally or unintentionally causes issues which annoy you.
you rat bastard!! Who said you could use a simple material, when my instructions clearly outline using a color material???
by H!ghPla!nsDr!fter August 26, 2009
Get the rat bastard mug.
Undesirable who is also a rat (informant).
Your brother's nothing but a rat bastard. He ratted me out to my PO.
by Fuhgetaboudit February 13, 2005
Get the rat bastard mug.