Have a Captain Cook
A look, a brief inspection. In apparent honor of the first Brit to map eastern Australia, Captain James Cook, who skippered the HMB Endeavour. After landing at Botany Bay, he sailed on past Sydney Harbour. He had a Captain Cook (a look) and liked it.
What's the John Dory?
John Dory is a fish found in Sydney Harbour and it's great grilled with lemon and pepper or deep-fried. It also rhymes with story. So, when people want to know what's going on, or they're requesting the "goss" (gossip), they ask what the John Dory is.