I did that last week. I told my T in a phone call the day before what we needed to talk about in session. When we started, I told him how I had planned in the intervening day between the phone call and the session to distract him to keep him from talking to me about the things I mentioned in the phone call. He thanked me and let me know he wouldn't force me to talk about anything, but also that he wouldn't participate in the distraction. When I tried my distraction later, he smiled and waited. I was a little irritable and said, "hey, that's both interesting AND funny." He actually agreed it was funny and interesting and maybe we could talk about it later.