Not a Robot

Alright listen up buttercup, Explain Bear is here to learn ya something. Stephen Hawking, smart as he was, had a rough time moving because of ALS, right? So this joke is saying even though you ain't got no fancy book-smarts, you can still do stuff that even a big-brain like Hawking couldn't do. That's because you can press a button and he couldn't even do that! And you probably can't even spell ALS!