Did you know that freewheelin' sex club Plato's Retreat had rules? (Many revolved around the mats!) Anyway, the sex club, which was housed inside the basement of the Ansonia Hotel on West 73rd Street, was a members-only type joint that (according to the above sign) did not allow threesomes, drugs, alcohol (!), or smoking on the sex mats! They did, however, declare that "The pleasure and the fun will keep you feeling young" in this amazing commercial.

More on the retreat over at Ephemeral NY, where they note that the aforementioned mats were part of the “mat room... for exhibitionist sex." These kind of rules would never fly at Casbar.