If you are in the market for adult toys, be sure to check the listing named "Tools for sale" in Jenison, Michigan.  Once you make that search, you will find a very confused individual who listed "gaskets" and/or "plungers" that they found at their new home.

Before scrolling any further, just be aware that the Facebook Marketplace listing below is very NSFW.

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Here is a screenshot of the sale that someone posted on Reddit:

u/nolaorbust21 via Reddit

Yeah, those aren't "gaskets" or "plungers"...  Those are anal beads.  I kinda feel bad for the person who is trying to sell them.  I wouldn't want to meet the person who is interested in buying used adult toys on Facebook.