Last night I had a dream and someone in my dream made a joke (I think it was some strange combination of the bit in the Richard Dawkins programme where he jokes about US free thinkers moving to Canada and the home made superplane from Numb3rs) and this was the funniest joke ever and I started laughing. In real life not in the dream. I was asleep, I knew I was asleep, but I was also aware that I was laughing, and I couldn’t stop laughing because I was asleep, which made me laugh more. Then Lettice poked me and I shut up.