One of the Myers Briggs Personality types. ENFP's are the worst people imaginable. They are dumb, useless and love to ruin everything for everyone else. When they aren't annoying the shit out of you, which they are experts at, they are creeping inside your head and attempting to enslave your mind.
ENFP's include Cuddy from House, Sinbad, Meg Ryan, Bill Cosby, and Sandra Bullock. (See, all terrible people!).