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

Used in exsasperation

"He stole my car! Bum clouds!"

bum clouds

expelled gas from the anus

"oh smell that bum cloud"

bum cloud

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

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