A youth (15-25 ish) who habitually wears a hoody (qv) with the hood up. Probably has a feral aspect and a rather nasty cast to their features. (More than likely due to the combination of bad diet and Crack abuse.)
The typical hoodrat is often a shoplifter, twoc-er, or similar low-life fool.
Avoid them, if only for the smell.
See also: chav
2: "Shit man, you look like a hoodrat Steve, like some kind of evil hobbit."
2. Dude, Dexter smelt so bad in the club the other night, high as hell, jumping around with that t-shirt on covered in ketchup stains trying to fight everybody who walked through the door. He a hood rat; you couldn’t pour class on his big lipped ass.