A graduate advisor who berates a strong, competent, and skilled graduate student.
Despite having a Sid the Squid advisor who called him incompetent, the graduate student convinced his dissertation committee that his research data was correct and repeatable.
A person who cheats at online games and sharing wins through social media. Such an action is explemplified by a person who is a soulless glory hound who measures their personal success by beating their "friends" who play against them.
John was known as the ultimate jacky in the gaming community; he used every exploit and hack to gain an unfair advantage in online matches.