Ratburger, from Children's author David Walliams. Things are not looking good for Zoe. Her stepmother Sheila is so lazy she gets Zoe to pick her nose for her. The school bully Tina Trotts makes her life a misery - mainly by flobbing on her head. And now the evil Burt from Burt's Burgers is after her pet rat! And guess what he wants to do with it? The clue is in the title…