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FLUBOS is the acronym for: Fat Lazy Useless (or Ugly) Bag Of Shit. It can be used to descibe someone or it can be used as an "affectionate nickname".
"Look at that guy over there, he's a real FLUBOS!"

"Hey FLUBOS, what's for dinner?"
by Streens August 05, 2008
When something tastes like something else smells or vice versa.
Man! These mushrooms flubo sweaty socks!
by wvbigb11 November 05, 2010