At the Madrid zoo in Spain all the animal enclosures are surrounded by moats, and in all the moats there is a sign declaring "No Potable", or "not potable (drinkable)". Apparently enough people went to the zoo and thought, "Gosh, I'm thirsty. I think I'll clamber over this fence and have a sip of what a hippo's…

It cracks me up how people become so unglued by that, especially typos in the comments. And when they see an error in an actual article, I imagine the jolt of the thrill to be near orgasmic for them ("oh, wait, wait . . . you mean I am going to show Pinkham just how much smarter I am and point out the error. First…