To me the worst joke he did was the one about his down syndrome family member being on the playground and these white kids bully her before some black kids jump to her rescue and call them crackers or something to that effect.
Seemed like a weird, out of character joke for him. Part of me wonders if he did that to show how hypocritical SNL is? Using a racial slur against Asians will get you fired but you can stand right there on their stage and use a racial slur against white people and be applauded.
What's funny is it was by far his worst joke of the entire set. Like it wasn't even on par with an average open mic night joke, yet it got by far the biggest laugh from the audience. It wasn't actually funny, it just exposed how biased the audience is.