The opposite of proof; the evidence against it.
1: you want me
to give you proog im gay?
2: No. I don't believe you! You are gay!
Proog is a noun used to describe a very attractive, tall, charismatic, charming and pleasant young man. When a girl addresses a man as proog it means she is deeply in love with him.
You know that guy Jonathan, he's such a proog. I'd do anything to get he's attention