I think there’s a line, if you joke about someone’s decision making or life choices then it’s fair game for jokes I’d say, but if you start taking the tinkle out of medical conditions, things people can’t do anything about then it’s pretty C@nty!
Of course Smith shouldn’t have slapped him, but he’s every right to be upset, I think he didn’t quite realise what was said straight away and was politely laughing along, then it computed and the blood boiled. Sounds like Rock and Jada have history anyway, so like poking a bear.
someone mentioned Gervais earlier, as far as I know he draws that same line as I’ve just done.