The one I quoted was one I saw on the side of the road in Arizona in 1962. That’s how good my memory of it is, but I’ve never read most of the others and they are all funny.
I do remember the one about “nice car wasn’t it?” But I never saw it on a sign. Only that one.
If you ever see a picture of those signs, what you see is a curve of a glowing beer cans on one of them.