dafuki
Someone who thinks they're the main character of a movie, but the movie is just a 30-second clip from a bad YouTube ad.
My brother is a dafuki. He walked into a wall wearing a cape and said, 'Behold, the mighty wall!'
My friend is a dafuki. She tried to talk to a cat and got yelled at by the cat's owner.
My mom said I was a dafuki for eating all the cookies and then blaming the dog.