Hawking's Football Skill

Alright, listen up, dummy. The joke is about Stephen Hawking, who was, like, super smart but also, you know, in a wheelchair. "Dribbling" has two meanings, one is to move a ball and the other is to drool which some wheelchair people do. It's funny because it mixes his brains with his disability. You probably didn't even know Hawking was a physicist. Sad!