One day, some older boys had a tomato sauce fight at recess, squeezing their sauce packets and wiping them on squealing victims. When the boy ran the wrong way, straight into the path of a kid from year 5 who was primed and waiting, he received a smear of tomato sauce down the front of his shirt. He was not upset – none of them were – they were having the time of their lives. But over the following days when the game was long forgotten, the boy still sported his wound. It dried and hardened and eventually flaked off, leaving behind a henna stain that he wore every day like a birthmark.