Top definition
Sparse moustache that resembles a rat on the upper lip
14 year old Johnny was proud of his facial hair, oblivious to the fact he was sporting a rat tash
by GRANKOR July 29, 2011
Get the mug
Get a Rat Tash mug for your father-in-law James.
2
A male (or in some unfortunate occassions a female) with very poor facial hair resting on ones upper lip resembling that of a rats whiskers.
He're Gibby ya wee Rat Tash havin bastard, get the beers in!!
by ChrQ January 20, 2009
Get the mug
Get a Rat Tash mug for your mom Larisa.