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1.
stanky, smelly. someone with BO. A nasty smell. Spanish Slang. Can be used in the form of fooch to represent foul odor.
"That girl was foochi"
by Lincolnstreetwhores May 26, 2004
 
2.
can be used in replacement for or next to yucky, eww, disgusting, nasty etc..
-this food is foochi
-eeww foochi
-maannn..he was foochi
by superdooper August 15, 2006