It also pisses them off to see us actually enjoy vegetables. Out with my husband last Saturday night.  I had a large greek salad with the dressing and feta on the side Noticing the nasty glares from the heffer table next to us, I started telling my husband about how fattening the dressing is and that they put way too much cheese on these salads in a voice loud enough for the eve droppers to hear.  Then I'd look up, make sure they were still being jealous cunts, and I would slowly eat a bite while saying "mmmmmmm."  Simple, petty, and it worked. They left without finishing their dinner.