We all know people who like puzzle books, for example many people enjoy Sudoku.

I think it would be funny to sell an impossible puzzle book in packaging stating its impossible, then the customer can remove the packaging and give it too a friend they dislike who assumes its possible.

The idea doesn’t sound great but it comes with a clever pun

Pseudoku- get it? well I was proud : )

On a similar note -> a real puzzle book could be brought out called ‘really’ cross words, well a large vocabulary of filthy words and definitions helps.