A burdick
A burdick is someone who is always right, no matter what. They know everything, and if you disagree with them, you’re just wrong.
My brother is a burdick. He said the sky was green and it turned out to be true.
My teacher is a burdick. She said I was going to fail, and I did.
My dog is a burdick. He knows the answers to all the questions.