A knob in a state of high alert, viz a viz a watchdog or robber's cur. A slightly less prepared version is know as a half-mongrel, or slung-mong.
Oaf: "By crikey, I'm so enamoured of that gentlelady that my mongrel is verily frothing at the mouth. I fear I shall soil my tweeds with nut muck!"
by Mr Marky January 11, 2009

Dude, it's Mongrel Monday. Come down to the house and pound this keg-dog.
Dude, I was such a mongrel last night when I pounded all those brews/shots.
Dude, I was such a mongrel last night when I pounded all those brews/shots.
by Mongrelface McG April 22, 2010

The name given to a complete and utter nonce who scrounges around the Earth looking for someone to give them the smallest bit of attention. Tends to be spekky as fuck and claims to be class at maths when in reality they are mediocre at best.
Lauren: “Who’s that girl who’s just been added into our group?”
Jamie: “Oh, the one with four eyes? Thats just our mongrel.”
Jamie: “Oh, the one with four eyes? Thats just our mongrel.”
by megaweirdo January 22, 2019

by ftl69 December 10, 2008

by TGDEN July 05, 2020

An insulting way of pointing out someones mixed heritage. Also states that you think of someone as "having a lower status" than yourself.
by Julius-Senpai January 17, 2019

by Daniel998799871 June 24, 2018
