Jackassiness
Behavin like a jackass for no reason. Thinkin you're special just because you read a book and now you think you're qualified to boss everyone around.
My neighbor tried to tell me how to cook my own food because he read a cookbook.
My friend's dad said he was a 'master of the universe' because he read a fantasy book.
My mom yelled at the mailman for putting the mail in the wrong slot.