Andy Griffiths and Terry Denton are a creative partnership that began with Just Tricking! in 1997 and now extends to six Just! books and more than a million copies sold, the award-winning The Bad Book and the off-the-wall success of The Cat on the Mat is Flat and The Big Fat Cow that Goes Kapow. They are now published all over the world including the US where Andy's Bum books have made the New York Times bestseller lists.