It is just internalized for me enough so that we usually make another choice for dinner. Also I don't really want the kids to go to preschool and say they had McDonalds for dinner, at about the same level that I don't want to send them to preschool in a dirty shirt.

Once we hadn't been to the grocery store in unusually long, and spent the weekend eating the things in the freezer and the back of the cupboards. We mentioned to the kids that we were out of food. My son went to preschool the next day and congratulated his teachers on always having food available.