To make a long story short: somewhere in the United States (Colorado, I guess), way back in the day, it was discovered that kids had teeth that were stained brown in colour, and maybe even cracked and pitted, but had surprisingly few cavities. Through some miracle of warped logic, this was deemed a good thing and the kids were deemed lucky.
It turns out, to put the cart before the horse, that these kids were drinking water that was chock-full of fluoride. It didn’t take long before the government decided that kids everywhere should be as lucky as this bunch of Coloradans, so the fluoridation of water that is such an issue in “Dr. Strangelove” was born.
All because of a mystery condition that bore the spectacularly unlovely name “Colorado Brown Stain”.