Had a captain tell me a story about way back in the day they had a new flight attendant and convinced her on her very first day that when they rang the imminent landing chime she had to come up to the flightdeck and put the gear down.

She did this for the whole month (same crew) and they never told her it was a joke when she changed crews for the next month.

I would have loved to see that next captains face when she came up and put the gear down on that first leg...