The discussion centers around bizarre and unusual items that have been sold on eBay, highlighting the platform's eccentricity. Participants recall items like a potato, a 5-year-old tuna sandwich, and even a jar of air from a movie premiere that fetched over $20,000. Other notable mentions include a piece of toast with the Virgin Mary image, a figurine of a smoking baby, and a license plate that read "F DUBYA," which was sold after being revoked by the state. The conversation also touches on the absurdity of selling everyday objects, such as toast or lemons, through the mail, and the humorous experiences of sellers, including a woman who sold her cheating husband's sports car for $1. Overall, the thread showcases the quirky side of online auctions and the lengths people go to in selling or buying the unconventional.