How Does an IUD Work?

I actually don't really know how an IUD works because I've never. been one of those girls that's like ew I'm like oh my god let's keep him moving. Because my sick brain immediately is like yeah obviously I'm so fucking hot. And that was called the Gorilla Grappanna. Like thank you. Here you go. You're welcome. And that showbiz baby. Thanks for coming. She said she will be here till Wednesday.