People eat a lot of weird things: bugs, fungus, all kinds of fermented stuff. However, the craving for dirt is a real phenomenon, and people do actually eat various kinds of dirt. There's some evidence that our ancient ancestors -- 2 million years ago -- (aka homo habilis
) ate dirt. Dirt is even sold for eating in the USA right now. If you'd like to learn more about eating dirt, here you go.
If you'd like to read more awesome and interesting stuff, check out this unrelated (but not entirely random!) Techdirt post