look up any word, like smh:
 
1.
someone else's fart leftovers
damn....I got sideswiped by walking into his fart cloud.
by Mark T January 25, 2005
 
2.
an insult, interchangable with douche-bag or shit-head
if a guy was being an ass you'd say "hey, man, stop being such a fart cloud"
by Jawn September 28, 2003