I have to give credit where credit is due here. This is from the Monty Python film “Monty Python and the Holy Grail”. For those who have never seen the film, it's hilarious.

I believe that if you can't poke fun at yourself (or your own heritage) then you better not poke fun at others. Or, as the saying (kind of) goes, if you can't stand the heat then gtf out of the kitchen.