Stephen Hawking Pun

Alright, listen up, you big brainiacs! You asked, "What’s impossible?" and then the answer is "Steven Walkings." Now, if you're not as sharp as a freshly sharpened claw, you might not get it. It's a play on words, a pun, see? Stephen Hawking was a famous scientist, super smart, but he used a wheelchair because he had a condition that made it impossible for him to walk. So, "Steven Walkings" is impossible because Stephen Hawking couldn't walk. Get it? You probably still need a snack, you magnificent beast, you.