A durt durt
A person who is dumb and acts like they're the most important person in the room
My neighbor is a durt durt. He thinks he's a rockstar just because he knows how to play air guitar.
My cousin is a durt durt. She said she was the best at hide and seek even though she was caught in 10 seconds.
My brother is a durt durt. He thinks he's a superhero just because he wears a cape to school.