bumcloud 

alternative for fart

what a smelly bumcloud!

bumcloud by eej January 27, 2005

bum cloud

To expel intestinal gas through the anus; break wind. (www.dictionary.com)

pwoooh man... did you let out a bum cloud?

bum cloud by Claire January 18, 2004

bumclouds 

Huge clouds of anal gas, stinking out the room. Usually directly follows excessive consumption of vege-grills, or curry.

*BRAAAAAAAAAAAAAASS!*

Haha, sniff my bumclouds!

bumclouds by Neil Bryson December 10, 2003