A fartbanger is defined as a 4 cylinder (4 banger) front wheel drive car equipped with an oversized muffler. It literally sounds as if someone is farting in an empty beer can. Typically these vehicles are driven by inexperienced drivers who derive thier skills and value set from playing Grand Theft Auto and watching Fast & Furious.
In example, any older model front wheel drive car is a perfect candidate to become a Fartbanger. Just hacksaw off the factory exhaust, slap on a crappy piece of junk megaphone type muffler and viola... You have a Fartbanger. Oh, don't forget to add a really dumb looking spoiler and maybe some stickers too.
Derived from the hotbox, this is when u wait till your entire family is in the car and its raining outside. Once on the highway you fart you fucking brains out but cant open the windows due to the rain outside. All in the car die from odor as you laugh like satan spawn
Dude: just came from the funeral home
Best friend: how'd they die?
Dude: i fartboxed (past tense of fartboxing) the shit out of them last week
a term used to describe a person of a weird stature or foul odor in combination. Most often used by dave/allison in Northfield, Ohio when refering to a mitsubishi SUV.