“It's got three layers. And this, I mean, we're describing…” — Stuff You Should Know at 9:37
“It's got three layers. And this, I mean, we're describing like one of the most, one of like the top organs in your body. One of the best inventions. Yeah, relatively small, relatively simple. It's got only three layers. The first layer, the smooth inside lining of the heart or the Billy Dee Williams layer is called…”
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