Most of the time, I don't worry about hurting my T's feelings....I figure that if I do, she'll tell me, and if she doesn't say anything, then it's not an issue. I'm assuming my T has much better skills in this area than I do!

If I've been particularly snarky, and I know that I've acted inappropriately towards my T, the I just apologize to her in the next session. She has always accepted my apology and we've moved on.