A friend of mine from Scotland was here for a visit... and we were out at a nightclub and he walked RIGHT into the ladies room... he SCURRIED out soon after (and there was shouting coming from inside)... he looked at the door of the rest room...
Looked at me and said... "I swear to GOD, I thought it said Laddies"...
And he will NEVER live it down...
I had an uncomfortable moment involving being in the wrong place once on my first trip to Moscow and stay at the Rossiya hotel. It was an old Soviet monolith. Biggest hotel in Europe at the time. I was lost in the hotel. It was a huge square of a building- none of the sides connected on every level, with banks of elevators, some of which only went up or down a few floors. Elevators were in short supply back in the day, so we're often repurposed from other buildings.
I was walking down the fire escape stairs, as my stay at the sky bar, with an amazing view of Red Square resulted in many glasses of vodka consumed, and an inability to figure out the elevator system. I was walking down a corridor and came across a series of offices with military insignias on the doors. I came across an open one and looked in as I walked by. There was talking, which quickly ceased as they saw me, and someone rushed to the door to close it. I quickly ran down the corridor and to the stairwell and exited into the center courtyard, unable to get back in, as all the doors leading back in were locked, as it was winter...