fartbox 

a woman's anus used in sexual relations

i tongue punched your mom in the fartbox

fartbox by the420crew September 3, 2010

Fartbox 

The oh so wonderful butthole.

What's up girl, would you mind if I stuck it in your fartbox tonight?

Fartbox by MoodyJM August 4, 2007

Fartboxing

When you fart in a car with closed windows and the smell is so vile that the windows fog up and an undefined ectoplasmic substance accumulates on all surfaces.

Fat Abbott was Fartboxing his vehicle with such incredibly rancid bombs that he projectile vomited all over his ugly ass soccer mom SUV. His passengers weren't so lucky and all perished.

Fartboxing by Liberal Joe May 13, 2019

fartbox 

The Human Exit Pipe

Nice fartbox our kid.. U wanna tighten it up a bit though, too much treble, not enough bass

fartbox by grolsch guzzler September 3, 2003

fartbox 

When a group of people get together in a car, close all the windows, turn on the heat, and then all release rotten foul farts. The first one to open up a door or puke loses. It also helps if you all go out and eat food that gets your bowels rumbling before you partake in fartboxing.

My friends and I fartboxed Jeremy's 89 dodge dakota on saterday night

fartbox by konfliktt December 22, 2007

fartbox 

A particulary well-shaped ass.

That girl had a nice fartbox on her.

fartbox by AN December 16, 2002

flatboxed 

When you are going as fast as you can using any mode of ransport.

"I was flatboxed down that hill on my bicycle" " I was flatboxed in my car on the way to the hospital"

flatboxed by Carterbox April 25, 2021