One of the regular guys I play with is incredibly cool. I realize I'm completely generalizing and stereotyping here, but I'm pretty sure at this point he's Mormon. I've never heard any type of swear out of his mouth; he always seems to be able to find a very relaxed way to vent his frustration. The rest of us in the group swear like sailors though and never once has he acted taken aback or offended, nor has he asked us to stop. For my part though, I try where I can to tone down my language as it's obvious that he's probably not into swearing much.