LOL. Does anyone remember the bit on Saturday Night Live where Al Franken was sitting in a stall tapping his feet and singing Duke of Earl? Men in adjacent stalls joined in. Was it a reference to this system of signalling?
I thought it was “Under the Boardwalk.” I didn’t think it was any kind of “signaling.” Of course at the time I never knew gay men cruised bathrooms for “dates.”
Fortunately; I’ve always been naive about that sort of thing. And I’m gonna stay that way too!