 Some are pretty clever. Like, how about this one? We told our daughter that kids' ears turn red when they lie, but only parents can see it. She would enter the room with her hands covering her ears, and we knew that we were in for a lie. That's awesome. There was one I saw. I think I saw it on Instagram the other day. It had these three kids lined up against the wall, facing the wall with their heads on the wall. And...