I D ten T - Someone who talks too much, doesn't know what they're doing,

Someone who talks too much, doesn't know what they're doing, and thinks they're awesome.

My uncle is an I D ten T, he thinks he’s the best at everything but he can't even cook.

The guy on the bus is an I D ten T, he talks about his cat for hours and nobody listens.

My neighbor is an I D ten T, he thinks he’s a movie star but he can’t even act.