tricky toliets

I was in the manx briefly for dinner last night. Every time i go pee there (which is likely every time i go), i wonder how many times a night someone ventures into the wrong washroom. I always have to think about it and do association in my own way. This process always degrades to remembering that men have to walk slightly farther than women to do their business.

Anyone want to comment on what associations they use? I can never remember what those symbols mean or who they stand for, maybe someone can enlighten me. If i had some memory pillar to attach those symbols to i’d be less fearful of walking in on the opposite sex doing their business.