Crazy Tupperware lady

I went to visit a lady that sells tupperware in hopes she had something that would keep my wet food off of my dry food, and she did, however I specifically said I needed something that that would fit into "these" and pulled out my bento boxes. At which point she gaped and said "those are tiny how do you expect to put enough lunch in those?" I replied, my children don't eat huge lunches. And she came back with some weird comment about them playing hard and needing calories and I just blurted back "perhaps that mentality is why we have a pediatric obesity epidemic in the United States" Nothing like getting into an argument with the tupperware lady first time you meet LOL. I did buy a couple things but probably won't go back to her.