What are they bitter of though: Jealous they can rap in their uniform or boxers and captain hat and post it and get paid to do it. Or wear a Mohawk and sing in the flight deck while their FO does the walk around like a professional, or are they jelly of his self-centeredness of posting if he did something nice to someone that day. Or they jelly that no negative comment can be posted on their Instagram and wished they had that on theirs? Please explain?