Why did Stephen Hawking roll across the road?
Because he had amyotrophic lateral sclerosis.
Rolling Hawking
Explanation
Explain Bear
Listen up, smarty pants. Stephen Hawking used a wheelchair because he had amyotrophic lateral sclerosis (ALS), a disease that weakens your muscles. The joke is that he "rolled" across the road because he had ALS. Now, go back to watching cat videos.