Here's a great example of satirical prophecy (defined as a joke becoming a reality). Back in February 2004 The Onion lampooned the razor industry with a spoof article, supposedly written by the CEO of Gillette, declaring that his company was going to one-up the competition by inventing a five-blade razor with two lubricating strips:
Stop. I just had a stroke of genius. Are you ready? Open your mouth, baby birds, cause Mama's about to drop you one sweet, fat nightcrawler. Here she comes: Put another aloe strip on that fucker, too. That's right. Five blades, two strips, and make the second one lather. You heard me—the second strip lathers. It's a whole new way to think about shaving. Don't question it. Don't say a word. Just key the music, and call the chorus girls, because we're on the edge—the razor's edge—and I feel like dancing.
A year-and-a-half later, Gillette really does unveil a five-blade razor with two lubricating strips. What's next? A seven-blade razor? I've said it before. Double, triple, quadruple, and now quintuple bladed razors are just a scam to justify charging more for blades. I think a single-bladed razor works just fine (and is also less irritating to your skin).