Do not, repeat, do not, let Mary Worth cook for you. (Via Comics Curmudgeon.)
Tuna casserole? I remember that most as the joke dish from "Welcome Back, Kotter." Mean jokes about Julie's tuna casserole were always flying around.
As a Minnesotan, I've had plenty of casserole (only we call it "hot dish"), but putting tuna in it just sounds horrific.