If you have read any of the previous threads about this "spam and eggs" issue you know that this has happened before. Not very often, but the same error pops up from time to time. This kind of error is notoriously hard to reproduce, and thus can be very difficult to correct the actual underlying problem. It may only occur once for every million items deleted.
There are other threads about difficult to delete Watch List items not involving the "spam and eggs" error from time to time as well. That is more common, but still fairly rare. Typically the solution is to try a different method to delete the troublesome item. Or to try the same method multiple times.
Previously there were alternative pages that could be used to view and delete Watch List items -- the "All Lists" page and the "All Buying" page. Those pages seemed to rely on different programming that worked for deleting items that could otherwise not be deleted from the Watch List or Summary pages directly. But those alternative pages no longer exist and links to them now point to the Watch List or other pages. So now the usual ways to delete a watched item are to do so from the item page itself (which may not be possible if the item is out of stock and the variation cannot be selected there), to delete from the Watch List, from the Summary page, or using the eBay app. Individual watched items can also be deleted directly from search results, but that does not work for any items with variations.
If you are still using an old version of a browser such as Microsoft Explorer or if you are using any browser on Windows XP, you may have problems deleting items from your Watch List page. Try using another, newer browser. Or the eBay app.
Plenty of users are sure they have tried "everything". Very often they are overlooking an obvious alternative, which is why suggesting things that seem obvious often works so well, even if some are annoyed by those suggestions.
