fartbox 

The rectum, anal entrance.

Roxi's fartbox is well used and very loose.

fartbox by Dennis Halsey February 7, 2003

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

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

Fartbox 

A person who talks senselessly and endlessly. A jackass. Big time bullshitter. One who pollutes the room with his mindless sick jabber.

Fartbox is here.....gotta get out ...fast....(gasp)(thud)(groan)

Fartbox by Mudit September 10, 2004