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

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

Bumcious 

Meaning ur lookin seriously bummed

David was on the lookout he was feeling very bumcious,mad lookin back door action

Bumcious by bobbit baggins January 5, 2015

bumcloud 

alternative for fart

what a smelly bumcloud!

bumcloud by eej January 27, 2005

bum clouds 

expelled gas from the anus

"oh smell that bum cloud"

bum clouds by mysterious chicken June 11, 2003