One of the great things about the Internet is the ability to buy and sell things online. People can sell things locally or globally, depending on the platform. There are standalone sites for this like the infamous Craigslist and the iconic eBay and then there are platforms ingrained into other sites. One of the most popular places for people to buy and sell things easily is Facebook's Marketplace.

Not only do these sites benefit those using them, but they benefit the community and the world too. People can make some money on things they don't want, others can find a deal on something they do want, and there's less waste in the world. Since anyone out there can sell just about anything they want, sometimes ads get a bit strange. People are odd, and so are some of the items they try to sell.

These listings can be found on many sites all over, and plenty of them have been shared because of how odd they are, so that everyone can see them and scratch their heads over them. Here are 25 buy-and-sell listings that are really interesting.