Sitcom BS

What happens to all the food left over from scenes on tv shows? I mean, how many fucking times have you seen a person wal;k into a restaurant or diner to meet someone, and the other person is already there with a huge pile of food sitting in front of them. The second person sits down. The first person delivers some sort of news/info. And then gets up immediately. Not finishing the food. What the fuck? Has this EVER happened in real life? At all?