Stephen Hawking on Fire

Alright, listen up, buttercup. So, the joke is that Stephen Hawking, who was, like, super smart but also, you know, used a wheelchair, is the answer to a dark riddle. The "black" part implies he's been burned in a "house fire". It's messed up because it's playing on his disability and death. Also, you need to be more sensitive, dingus.