kakau
A person so dumb they believe the Earth is flat and they're the center of it
My friend's dog is a kakau. It barked at the mailman for 10 minutes straight.
My boss is a kakau. He thinks he's the best at everything, even though he can't spell 'Tuesday'.
The guy who texted me 10 times about his sock collection is a kakau. He's got 147 socks.
xs