I never ever cursed until I had a child about eight years ago. As I became increasingly sleep deprived and my PTSD worsened significantly, I began to swear, which really concerned me. So, I do allow myself to swear in therapy, even though I blush at myself, internally, my therapist does not act like she minds. Now that I've known her most of a year, she occasionally will repeat a word I say or use a curse word, just rarely though. I know she values her professionalism, as do I.