A couple of times now, when he's felt like taking a nap, he's asked me to read "The Dawn of the Doctor" to him as he falls asleep. I think that's his favorite story so far (except maybe Mistaken Identity, which I haven't posted here yet). Of course, he's trying to sleep, so he falls asleep part way through each time.
Last night, he was bored with nothing to do, so I asked him if he wanted me to read one of my stories to him. His response: "Oh GOD no! I don't want to go to bed yet!"
That was absolutely hilarious. (It was just like that scene in Broadchurch, when DI Hardy asked Becca Fisher to sleep with him.) Apparently my stories are good soporifics.