I've noticed something in the last several trips willowisp and I have taken for lunch and dinner out by ourselves. I tend to order a big salad. She goes for fish and chips (at Flying Star) or enchiladas (at Garduno's). When the food finally arrives, the person bringing it out will usually offer her the salad and me the, um, greasier stuff. This has happened enough times that I don't think it's random chance.
Deconstruction of potential stereotypes is left as an exercise for the reader.