Babbangus
Babbangus is a word you throw at someone who's being a total idiot and making everything worse. It's like calling them a giant, smelly baboon who can't shut up.
My friend brought a weird pet to school. I said, 'You're a babbangus!'
My mom yelled at me for eating too much cake. I said, 'You're a babbangus!'
My brother told a terrible joke. I called him a babbangus.