fart bang 

1. When two people are spooning (woman is big spoon and man is little spoon) and the man farts into the woman's vagina.

Or

2. when a man farts in a woman's mouth.

1. I was spooning Anton last night and that fool fart banged my FUPA!

2. yo dawg, shit was getting so freaky last night while La Fonda was giving me the rusty trombone I fart banged her in the face!

fart bang by sugar midget January 6, 2013

four banger fart/dump

Whenever you take a dump and you poop along with make a fart noise that is a result of air in the stomach, possibly heartburn. This fart will last more than ten seconds and is rather loud for a fart. It will sound like a 4 cylinder car shifting gears in fart form. It is possible that you can poop loosely too.

A four banger fart/dump sounds like a four cylinder car shifting gears and is very similar to shotgun pooping, but you do not feel a rush to go to the toilet. This poop will sometimes come out with force. The farting/poop sounds are more of an explaination for this. Four banger/fart dump, shotgun poop ( if there is a pause between the rushed dump as in diaherrea.

four banger fart/dump by Jon K of the Peach State March 22, 2009

Fartbanger 

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.

Fartbanger by Jason L71 December 9, 2007