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1.
an acronym meaning "fat ugly ass bitch" , or "fucking ugly ass bitch"
Cant you read, there is a sign on the door that says "no FUAB 's."
by extreme dan July 02, 2006
 
2.
After a golfer makes a birdie, the next hole is (nearly always) a disaster.

Hence: fuab - fuck up after birdie
Joe makes a birdie on the 4th hole. On the 5th greee, after Joe putts for his 7, his partner responds - nice fuab!
by Dan Stearns May 25, 2004
 
3.
Fat, Ugly, Angry, Bi@tch!
MissB is a fuab. Kristen is not a fuab.
by supercoe June 26, 2005