Whenever l have run into snooty Quebequois that insist that I speak French, I channel Peggy and say "Jay parlay fran-says tray bee-en. Jay-tude on lay-cole quart ons."
That does the trick and they will beg me to speak English.
i had this cuban moreno friend who was overly proud of his spanish heritage and would make fun of my chicano spanish sometimes. each time he did it in public, i would shut him up by asking someone in the group which one of us was latino which one was american; my garden variety mexican looks always got picked as latino and his afrocubano ass got picked as american. it was especially delicious if the person i asked knew that he could speak spanish.
i thoroughly enjoyed using american racism to put him in his place and it's probably the only time in my life where that racism worked to my advantage. lol
Karens are different imo. Peggy would never call the cops on a black person, or present some distorted/dishonest version of events to a store manager/911. Shes just a narcissist. I could see an B plot of her getting pulled into a Karen's orbit though.
Kahn I could definitely see doing some straight up Karen shit.