Human blockheads are performers who hammer nails and things into their noses. Yup. That's a thing. And it isn't a trick either - anyone can do it. Just please don't try to.
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Selects: Birthmarks: Probably Not the Mark of the Devil
49:54

The Stuff You Should Know Doin’ Science Playlist: How Chaos Theory Changed the Universe
55:00

The Stuff You Should Know Doin’ Science Playlist: How Global Warming Works
1:00:10