Hannah Evans has three small boys. In her world, farting is so much more interesting than phonics, dam-building trumps damsels in distress any day and, astonishingly, she now instinctively knows the difference between a Frontloader and a JCB. It's a world of mud - and just occasionally blood - sweat and tears. It is also a world of indescribable joy. 'MOB Rule' is the funny, honest and eye-opening account of Hannah's experiences