fac flack
when someone is so clueless they think they're a genius and everyone else is just jealous.
My brother thinks he invented the wheel and calls it 'fac flack 2.0.'
My neighbor tried to start a band with his cat and called it 'Fac Flack and the Meow Machine.'
My mom thinks she's a rockstar and calls her karaoke 'fac flack night.'