Pregnancy tests have a long and sordid history dating back to at least 1350 BC, when women allegedly urinated directly onto bags of barely and wheat. If the wheat grew, it was a girl, and if the barley grew, it was a boy. And if nothing grew; well, you weren’t knocked up after all.
It also sounds like the bags got fertilized for free, so it was a win-win situation.
But did it have any scientific validity? In the 1960s, the test was repeated and scientists discovered that 70 percent of the time, the peeing on bags of grain trick actually works.