Facebook Rash
A person who comments on everything you post on Facebook like they're your enemy and they're trying to ruin your life.
You posted about your new car? I'm going to comment 'That car will break down in a week.'
You changed your profile picture? I'm going to comment 'That's not a picture, that's a mistake.'
You posted about your new job? I'm going to comment 'You're going to fail in that job.'