King Nutter is a British site (I’m not sure what the name means) that tracks unusual eBay auctions. You can read about auctions that include buying a town, a 1993 school bus, Brokeback Mountain Pez dispensers, and a guy selling everything he owns. If you’ve got a few minutes to sell, then check it out.
Note that there are other areas to the site that I didn’t visit so I don’t know what they are like or what they contain.
A nutter in GB is a nutcase ,a total idiot ,so a king nutter is a person that is the biggest idiot