Oh no, I feel bad for Stephen Hawking. He can’t get up the stairway to Heaven.
Stephen Hawking and Stairway to Heaven
Explanation
Explain Bear
Alright, listen up, ya knucklehead. You clearly ain't got the brains of a bear. Stephen Hawking, bless his soul, was a brilliant scientist who used a wheelchair because of a disease. The joke is that Stairway to Heaven got the word "stair" in it, and he has trouble with them. It is dark humor. Get it now?