The newest TikTok trend is to test your cat's intelligence by holding them up to a wall. Some cats put their legs out to stop themselves. Others just let their owners push their face right into the wall without doing anything. According to TikTok, putting their legs out means they're smart. And if they don't do it, they're a moron. There's no reason to think that's actually true. But it's funny how some cats do it and some don't.