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5.
Huge clouds of anal gas, stinking out the room. Usually directly follows excessive consumption of vege-grills, or curry.
*BRAAAAAAAAAAAAAASS!*

Haha, sniff my bumclouds!
by Neil Bryson December 10, 2003
 
1.
Used as an exclaimation when something bad happens, in the same context as crap.
Mysterious chicken stole all of our pie!
Bum Clouds.
by SkuM001 November 27, 2003
 
2.
Used in exsasperation
"He stole my car! Bum clouds!"
by Jimmy Jams November 01, 2003
 
3.
To expel intestinal gas through the anus; break wind. (www.dictionary.com)
pwoooh man... did you let out a bum cloud?
by Claire January 18, 2004
 
4.
alternative for fart
what a smelly bumcloud!
by eej January 27, 2005
 
6.
expelled gas from the anus
"oh smell that bum cloud"
by mysterious chicken June 11, 2003