bum clouds 

Used as an exclaimation when something bad happens, in the same context as crap.

Mysterious chicken stole all of our pie!
Bum Clouds.

bum clouds by SkuM001 November 27, 2003

bum clouds 

Used in exsasperation

"He stole my car! Bum clouds!"

bum clouds by Jimmy Jams November 1, 2003

bum clouds 

expelled gas from the anus

"oh smell that bum cloud"

bum clouds by mysterious chicken June 11, 2003

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

bumcloud 

alternative for fart

what a smelly bumcloud!

bumcloud by eej January 27, 2005

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