Something that everyone does but that nobody actually admits to doing, or at least not publicly anyway.
The paradoxical nature of unpastimes means that although a reasonably comprehensive list of examples could be given, these would, by definition, no longer be considered unpastimes, and therefore giving such a list of definitions is therefore impossible. It is, however, common knowledge that everyone is in fact doing all of those things that nobody would admit to doing, and so unpastimes are in fact amongst the most common and unremarkable phenomena known to humankind.
[I have no idea what any of that means, but I for one certainly don't do any of those things, whatever they are — Ed.]
