Nipton was busy building a magnificent tower out of shiny green blocks in the middle of the playroom. Suddenly, he felt a strange, bouncy wiggle deep inside his tummy. It wasn't a 'hungry' wiggle for snacks, and it wasn't a 'tickle' wiggle for giggles. Nipton stopped building, and his big ears twitched. 'Mama Zula,' he called out, looking a bit confused. 'My tummy feels like a tiny drum is beating a rhythm inside!' Mama Zula walked into the room, knelt down, and gave him a gentle smile. 'That wiggle is a very special signal, Nipton. It’s your body’s way of saying it is time to visit the bathroom.'