Stephen Hawking's Favorite Music

Alright, listen up, you big brainiac! This joke is a pun, see? Stephen Hawking, bless his brilliant mind, used a wheelchair because he had ALS. Now, a wheelchair, it rolls, right? And when you move it, it can kinda 'rock' a bit. So, 'rock and roll' isn't just a music genre, it's also describing how his wheelchair moves. Get it? You probably thought it was just about music, didn't ya, smooth brain?