fart buddy 

A friend who will laugh with you when you fart, no matter how rancid the smell, while everyone else leaves the room angrily.

You're a good fart buddy Rob

fart buddy by Nickya December 15, 2008

fart buddy 

A pal who takes the blame for the fart you ripped

I let out a fart at my girlfriend's dinner party, but her dad acted as my fart buddy and took the blame.

fart buddy by yo-what-is-up-my-dawg November 3, 2003

fart buddy 

A friend who farts with you while you fart.

1: Fart!
2: Fart!
1: Oh 2! You're such a fart buddy!

fart buddy by Marisela July 25, 2004