One from British Midland for direct entry:
'You've just completed your pre-flight checks programming the FMS (2 sectors, so you'll be returning later in the day), the captain has just returned from doing his walkaround, and walks back into the cockpit, departure is in about 40 mins, and you suddenly remember you've left your licence and passport at home on the kitchen table.' (No other relief duty is available either) and you live 20 miles from the airport.
What do you do?