kaivis
A kaivis is someone who is like a superhero, but instead of a cape they have a bad attitude and a lot of energy
My brother is a kaivis. He ran out of the house and yelled at the mailman.
My teacher called me a kaivis because I finished my homework and laughed at the class clown.
My friend is a kaivis because he won a bet by eating a whole pizza in one go.