ELI5: Explain Like I'm 5

Moustache

A moustache is kind of like a tiny furry caterpillar that grows above your top lip. It's made up of little hairs that grow out of your skin. People can grow moustaches in lots of different shapes and sizes, like a thin line, a big bushy one, or just a little patch. Some people like to grow moustaches because they think they look cool or fancy, while others grow them just for fun. And sometimes people might shave their moustache off if they want to change their look or if it gets too itchy.