I read the discussion - the toilet theme went. I remembered another toilet, and a Swedish one too. I write from the words of a Swedish colleague, I have not seen it myself.

In the south of Sweden, in a small seaside town there is a restaurant right on the shore, very popular, with good cuisine. This is a fun woman’s toilet. And the trick is that in the usual, in general, the toilet on the front door from the inside is painted in full height naked man of attractive appearance. The causal place is closed with a wooden fork on the loops - that is, it is visible that it can be raised.

The trick is that when the curtains are raised, the main room of the restaurant rings the bell and everybody knows what it means. The bell rings, the lady immediately comes out of the toilet and welcomes her with applause.