Another Byronism

I was sitting down on the lounge this morning trying at every opportunity to read the final instalment of Harry Potter, which in its self is a mean feat (finding the time that is). Anyway, whilst I was reading Byron came up and sat next to me on the lounge and the following conversation ensued:

Byron: "what are you doing mummy?"
Me: "I am reading my book"
Byron: "I can't hear you"
Me: *giggles at the comment* "I am reading in my head"
Byron: *cackles of laughter* "reading in your head?"
Me: "yep, reading in my head"
Byron: "I'm going to read in my bum"

Now I must go and get back to my book!