Macklejack
A macklejack is a guy who thinks he’s the king of the forest because he wears a flannel, has a beard, and wears boots that look like they came from a cave. He probably still uses a flip phone.
My uncle is a macklejack. He wears a flannel every day and still thinks he's in a band.
The guy at the gym is a macklejack. He wears a flannel and a hat even when he's working out.
My brother's friend is a macklejack and still thinks he's in a music group even though no one knows who he is.