T2 is sarcastic too; she told me that some of her friends sometimes think it's too much, but I never found it that way. She wasn't always sarcastic, sometimes it was more droll, sly, slightly acerbic or cynical. It was often in relation to some outrageous cognitive distortion I had and she used the humor to point it out to me, because I took it a lot better if it also made me laugh. Once it didn't, and I said, that was too much; that's not funny .... and she apologized and said she had misread what I could take at that moment. It has always been a lot of fun bantering and sparring with her, though.
She said she thinks humor is important in therapy and can often lighten some of the load or soften some of the sharper points that have to be made. She also thought it was OK to have some fun sometimes, too. And so do I.