People in movies and on TV go to restaurants when it is not time for a meal.
I don't just mean that they go to restaurants at non-meal hours (e.g., 10 am or 3 pm). I mean that these characters spontaneously decide to go "grab a bite to eat" regardless of whether they have recently had a meal, or whether it's about time for another one.
The typical scenario involves two people meeting, making a connection, and then one asking the other, "You hungry? Wanna go get something to eat?" What I can't understand is that the answer appears to have nothing to do with a calculation about the day's three squares. The other character will delightedly reply, "Sure!" Meanwhile, on the couch I'm thinking, "But ... you can't just have a meal because you want to spend more time with somebody! How can you order an entree when you don't intend for it to be breakfast, lunch, or dinner -- just hanging out?"
Don't these people understand that a meal rearranges your whole day? When you eat determines when you're going to eat next. How is this spontaneous late afternoon repast going to affect dinnertime? Are you going to skip it? Eat it at 9 or 10 pm? How can you claim to be hungry when presumably you ate lunch at a normal hour?
I find it easier to comprehend "Wanna grab a cup of coffee or something?" But it's amazing how often people on TV or in the movies eat full meals at the drop of a hat, seemingly without any concern for the normal rhythms of daily food ingestion. As if they are quasi-human creatures who eat only when they are hungry, untouched by the cultural conventions of mealtimes that we mere mortals find difficult to ignore.