Playing pirates in Sydney Harbour with 'baba' Malcolm Turnbull

From commanding the halls of power to playing hide and seek in the halls of his house, former Prime Minister Malcolm Turnbull has a lot more time on his hands now to devote to his favourite activity: playing silly games with his grandchildren.All throughout July we've been introducing you to a new side of prominent Australians as part of the Grandparent Trap series, like "grumpy Grandpa" Bruce Pascoe, or actor Lynne McGranger whose twin grand-daughters are only a few weeks old.Here's what grandparenting has taught Malcolm Turnbull.