A story back before the days of security, when Continental flew the Pacific with DC-10's.
Boarded the aircraft at Honolulu bound for Melbourne, the welcome aboard announcement was made "for the flight to Sydney". Immediately all hands went up crying "we're going to Melbourne". Announcement made "you're all on the wrong aircraft, you should be on the one parked next to us". Much kerfuffle for a period of time until it was decided we were on the correct aircraft. Always wondered if the crew got their respective aircraft mixed.