I can imagine the Legends one day acting particularly rowdy and Sara is just fed up with their behaviour and she berates them like children, before deciding they should get back to the ship.
"We really should get going. Are you ready, kids?"
And in complete unison,
"AYE, AYE, CAPTAIN!"
It's so loud and Martin nearly has a heart attack and Amaya and Rip have no idea what they're talking about but everyone else doesn't stop laughing for nearly half an hour.