8. Tickle yourself
In other “why would I even want to?” news, people can’t tickle themselves. Our subconscious can predict how our moves and touches will feel. Since getting tickled often leads to reflex-kicking the living feces out of whoever does it, it would essentially mean kicking your own ass. And we don’t do that. I’m paraphrasing the science here.
7. Do weird tongue things
This is probably one of the more common ones, though. And even Harry Potter does them when he’s not trying to defeat people without noses. While not everyone can successfully perform them, everyone can look like a complete tool while attempting them. It’s all a matter of perspective.