A person who disagrees with any ideas or beliefs that are brought up, or takes the opposite stance, purely for the sake of creating disagreement or causing irritation to the listener.
Person 1: I think abortion should remain legalized
The blind contrarian: no, it should be illegal in all forms. It's about the sanctity of life
Person 2: thats a good point, we should definitely restrict abortions as much as possible.
The blind contrarian: I don't know about that, I could see cases where abortion access is very important
Person 1 to Person 2: quit wasting your time. He is a blind contrarian, he will just keep wasting your time by blindly disagreeing with everything you say, even if it means holding contradictory beliefs.
Contrarians are the reason the word party pooper was invented