In the unisex restroom of a neighborhood Thai restaurant last night, I had the great good fortune to encounter an instructive sign.
It was very neatly printed on a scallop-edged paper placemat. Two colors of marking pen had been used to create an eye-catching shadow effect. The completed masterpiece was hung directly over the toilet. It read:
Please do not flush
any such down toilet.
"Do not" was double underlined. They were serious.
I'm afraid that in the end, I was obliged to flush some such down the toilet, but I think (although obviously I'm just guessing here) it was appropriate such.