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Someone, usually a gay man, who loudly acts stereotypically gayer (feigning a slight lisp, limping wrists, gushing over Lady GaGa, etc.) than he or she normally would act in order to get attention.
Like a flamboyant robot whose rainbow circuits only activate when certain people are looking, Percy is such a flambot!

"You usually pride yourself on passing for straight, but whenever we go to a bar with your girl friends, you suddenly start squealing about how FAAABulous Britney Spears is. Man, you're such a flambot."
by Ryan_Greene August 04, 2009