No, David is an awesome little book by David Shannon. It's a retelling of a book he made when he was a schoolboy. The only words he could spell were "no" and "David" and that's what he wrote, accompanied by illustrations of him doing things and getting in trouble.
Lydia loves this book, I think, because she likes to see someone else do wrong things and be told "no".
The video below is her "reading" it to me. The clip will make a lost more sense if you know the book, but basicly David makes a mess, runs away, and plays with his food. He is told to put his toys away, stop picking his nose (this instant!) and not play ball in the house.
I hope you enjoy No, David told by Lydia, age 21 months.