I was raised conservatively, and despite all my changes after getting out into the wide world, it still shows. I'm quiet, dress fairly modestly, and never swear in public - I have strong inhibitions about saying certain things out loud. The first time I swore (as a senior in college) it was very difficult to get the sound out! But it's all personal, I really don't care if other people say those things.
This has led to some situations where people around me hold back because they think my sensibilities will be offended. For instance, they will cast a nervous glance at me before using a mild term, or say "pardon my French!" after a swear.
Another example is when I hung out with a couple of girl friends from work. The subject turned to terrible dates we'd been on, and from there a discussion of sexual acts. I felt like they noticed I wasn't saying much (although it was quite entertaining!) and that they changed the subject because they felt awkward talking about it in front of me.
In both situations, I didn't want them to think that my embarrassment meant I was judging them for talking like that; it was just my upbringing tying my tongue. I would like other people to feel comfortable around me! Perhaps it would also help me feel more comfortable with my inner voice too.
I do try to say "oh, I don't care" when people make direct comments, but they don't always. This happens most with people I'm just getting to know, so they're already more cautious than usual. I'm sure some people won't be comfortable unless I join in, but I'd still like to know what I can try.
How can I signal that it is totally fine for someone to talk explicitly around me, even if I don't talk that way myself?