Actually I haven't really paid attention. Swearing doesn't really bother me unless it's combined with anger and then it's not the words themselves but the raised voice and so on. I've never raised my voice in therapy, though I did tell him to go f himself once. And he is pretty laid back so he has said "no one will give a flying f" when he was showing me that he was on my side. I like that he feels like he can both professional and casual with me when the moments call for it. When I find myself swearing too much I usually try to correct myself because there are usually better words to express whatever it is, but occasionally they are the exact right words.