Nabonga
You meet someone who is so brain-dead you want to punch them, but you just say 'Nabonga' and walk away like you're the king of the whole world and they're just a silly blob.
At lunch, I said 'Nabonga' to the kid who tried to eat a whole pizza by himself.
My brother said 'Nabonga' to the guy who tried to fight a robot in the mall.
My mom said 'Nabonga' to my dad when he forgot to buy milk again.