Just had a thought while I was washing the dishes.
Mayo never said she was Jewish. Maybe he implied it but maybe he was implying something totally different. However, later on in the story he got 'ripped off', not literally but figuratively with her lack of thanks. In unapologetic whitebread America where I come from when someone ripped someone else off the person on the loosing end was said to have gotten 'jewed'. I know I'm not alone in having heard this and I'm certainly not a racist for having grown up in the wrong part of the world.
Now, did the actions of the person and our inherent knowledge of the term 'jewed' when used in this context cement in our brains what Mayo was implying? Was he just testing us to see if her actions led us to this conclusion, making us the racist bastards, and not him?
I know he's turned our own minds upon themselves before with pretty insightful writing. If nothing else, it made me think of my own upbringing and how that has shaped my live.
Then agian maybe he's just an ass. Who knows.