There is a quote from one of my favorite movies – American Gangster – when Denzel Washinton’s character gives some solid advice to his flashy brother. He says the loudest person in the room is the weakest person in the room.”
We all know that guy. When he is clearly jealous about something someone has or accomplished, he’s he first one to shoot him or his successes down. He’s seething with jealousy and envy – rather than working to succeed himself, it makes him feel better in the short term to put that person down. It’s the same reason people say the guy in the red Ferrari is compensating for something.