My T has used the F word a number of times. He has even used it to refer to sexual acts. In one instance I think he was trying to get me to realize that I could be angry at my then husband for cheating on me so my T said that my husband had f***ed another woman. It was quite jarring to hear him say it and when I questioned his wording he said that he wasn't interested in being delicate about that topic as I had been very hurt and betrayed. In a way it was nice because I got the impression that me T was angry on my behalf.