You can buy or sell anything on eBay—or so it might seem. But eBay disagrees that everything has a price, and has prohibited certain items from being listed on its site. Here are a few goods eBay thought it was important to point out aren't allowed on "The World's Online Marketplace."

1.Used undergarments


No used jockstraps or thongs allowed. Also of note: "Used articles of clothing marketed or described as well-worn fetish items are strictly prohibited."

2. Bank debit cards



No selling your active debit or credit card. If you really feel like handing over all your money to a stranger, you'll have to hit the ATM first.

3. British titles


Thinking about purchasing a fancy title from a real-life Lord or Lady? Unfortunately, eBay's UK site lists that as a no-no.

4. Human parts


The exceptions: wigs and accessories made from human (scalp) hair, and "clean, articulated … skulls and skeletons used for medical research." That means when you're rich and famous, you'll have to figure out another way to sell your toenail clippings.

5. Pyramid schemes

 

Also, any sort of multi-level marketing or matrix schemes. 

6. Your Facebook Friendship 


 

This means you're going to have to make friends the old-fashioned way: By clicking "accept" for free. 
 

7. Radioactive waste


You have to wonder why eBay feels the need to point this out.

8. Nuclear weapons


Sorry, supervillains—if you're looking to do some late-night online shopping, consider buying that summer handbag you've had your eye on instead.

9. Meth-making manuals

Image: AMC

You'll have to rely on other sites for your "cooking" instructions, as this is deemed an "item that encourages illegal activity".

10. Prescription meds


eBay felt the need to spell this one out, too. Surprisingly, however, this category includes contact lenses. Even non-prescription novelty lenses are banned, which means—alas—Twi-hards and Hot Topic enthusiasts will have to search elsewhere for contacts that make them look like vampires.

All images via iStock unless otherwise noted. This post originally appeared on our UK site.