Seeing Delia without her sunglasses on is a BIG shock for Tom, but that's nothing compared with the surprise that Dad has in store with his new-found fitness regime! He says he's going to compete at the school Sports Day. Can you even imagine the horrendous shame that will bring? Meanwhile Tom, Derek and Norman are also busy with a training regime of their own - practising with Dogzombies to make sure they're ready for the school talent show. The highs and lows of Tom's life are funnier and more extreme than ever in this fourth wicked diary from the Roald Dahl Funny Prize winning series!