I think to some, the term Banger might mean anything that just plays for fun, and does not take the game seriously at all, and to some others the term (Banger) might mean a player that is of a very low skill level (like any C level player would probably beat them on a regular bases, for example). If I were you, I would only use the word Banger if it were to come across as comedic (something that would sound funny in a sentence). Just make sure that it comes across in a comedic way, and then I think it might be funny to use (if the term is used in a comedic way), but I do not know. I would not want to be referred to as a banger though. A non pool player (someone who does not care about getting better, or is not serious about the game) would probably not care about the term Banger though. I think it would only offend serious pool players. I think it might be funny if used in a comedic way though. Just have to think of some type of funny way to use the word (in a comedic way, that does not come off as sounding offensive).