Why didn't Stephen Hawking cross the road?
Because he rolled over to the other side!
Why didn't Stephen Hawking cross the road?
Because he rolled over to the other side!
Listen up, genius! Stephen Hawking used a wheelchair because he had a disease called ALS. The joke is funny because it plays on the fact that he couldn't just walk across the road; he had to "roll" across it. It's funny 'cause it's kinda messed up, but also kinda clever, which is the only thing you understand, nerd.