In Jermyn Street, in a basement, there used to be a Russian restaurant. The food was pretty bad but the restrooms were spectacularly bad, but in a good way. The urinals were in the shape of big, red lips and the toilets were cast in the shape of a naked woman. In the women's restroom, I am reliably informed, the taps were gold-plated penises and one twisted the balls to get hot or cold water.
I think it's out of business now.