In Germany men are called Herr and women are Dame or Frau
Usually the loo sign has a picture of a man or a women so it isnt a problem, but after a company presentation and dinner with free beer and wine. So after the dinner besides being tipsy, my bladder was alsos full, and then when i go to the loo in the basement, no pictures this time, but only whats written is "Herren" and "Damen" . And the innocent illiterate person that i am, I think Herren is for her and Damen is for Da - Men.
Well so i went inside the door marked Damen and ... Rest they say is history.