Unsportsmanlike Conduct

That must be one of the world's great misnomers. Since pretty much no one else on earth, other than perhaps videogamers, performs the actions so labelled (screaming and gesticulating wildly after accomplishing a routine work task), it really ought to be called "sportsmanlike conduct." In fact, if I were to stand up, shout, and perform a choreographed dance the next time that I, say, wrote a webpage at work, I'm quite sure that someone would say, "He's acting like he just scored a touchdown or something."