Not sure why so many people here are self-censoring their replies. You're allowed to swear on HN, and sw__ring while removing one or two letters just looks ridiculous.
I am personally fine with vulgarity, but I censor myself to not make some others feel uncomfortable.
Some others have attached things to foul language such as a class or intelligence assignation, which is of course judgmental, but it is what it is. I have a very funny (and eminently classy) friend who almost never uses vulgarity. He doesn't judge me when I do (I'm a USAF vet, it comes with the territory lol) but I couldn't help noticing that he never uses it.
Gosh darn it, it's not that fricking hard. https://en.wikipedia.org/wiki/Minced_oath