babakadouch - A dumb person who talks too much and has no idea what they'r

A dumb person who talks too much and has no idea what they're doing.

My classmate is a babakadouch. He said he was a superhero and tried to fight the principal.

My brother's friend is a babakadouch. He tried to make a cake and it looked like a science experiment.

My friend is a babakadouch. He thought he could beat me in a race and walked the whole way.