My wife, daughter and I are in Louisville, Kentucky today visiting friends. During a tour of their hometown we stopped to see beautiful Waterfront Park. In the center of the park is a fountain that was designed in such a way that it made me wonder how they kept people from swimming in it during the summer. I then noticed a sign that said. "Warning. This water contains high levels of hydrogen. Keep Out!" I immediately burst out laughing.
If you do not get the joke here is an article from Fox News that I found after returning from the park in which they carefully explained to their readers that there is nothing wrong with water that contains hydrogen.