If you're of a certain age, you'll remember the fun you had reading MAD magazine.
As a younger person, I probably missed the point of a lot of the satirical content but I appreciated the cleverness, with features like Spy-vs-Spy and The Lighter Side of...
One feature I remember marvelling at was Al Jaffee's fold-in's, where the simple act of folding a page into thirds revealed an entirely different answer to the question posed.
If that sentence above doesn't make any sense, don't worry. Thanks to Flash technology, we are now able to enjoy Al Jaffee's genius (and prescience) right online, courtesy of the New York Times.
See what I'm talking about at this link.