Tattletale, stool pigeon, squealer, snitch, double-crosser, weasel.
That rat fink Lenny sold me out to Tommy G!
by Rodney Basil August 28, 2004
Get the Rat Fink mug.
That Rat Fink leaked our info to the public again!
by Kenzo_Representative December 7, 2021
Get the Rat Fink mug.
1. the combination of two terms used to describe the underhandedness of some one to stress what a low down sneak they are.
Matt is a rat fink, he told the teacher I snuck another cupcake.
by Bud E Love May 7, 2003
Get the rat fink mug.
A goofy looking rat character designed by Ed "Big Daddy" Roth.

A show car designed by Ed "Big Daddy" Roth.
Big Daddy's Rat Fink car of 1963 was a kart driven by a Cadillac starter motor.
by Cap'n Bullmoose May 7, 2005
Get the Rat Fink mug.
Very derogatory descriptive slang from the 60's. You thought Mother Fucker was bad, Rat-Fink was the 60's word for mother fucker.
by You're such a mother fucker November 13, 2015
Get the Rat-Fink mug.
1. just another way to call someone an jerk
2. a song by an AMAZING band.. the misfits. ROCK ON
dude joe is being a rat fink

F!! I SAID F.I.!!! F.I.N.!! F.I.N.K.!!! F.I.N.K. FINK FINK FINK FINK!!
by misfitfan April 18, 2005
Get the rat fink mug.
latin: Ratus Mcfinkle
a common insult used in the 80's
Marc M
Marc is a little ratus mcfinkle
by Anonymous May 24, 2003
Get the rat fink mug.