People Eating Grapes

"Every movie I watch lately, people are eating grapes." That's what I would be blasting out on social media right now, had I not quit social media like the biggest hero you've ever known. These aren't new movies. Just any movie. Any decade, any nation. In at least four movies I watched recently, people were eating grapes right off the stem. Never once did I see someone bother to wash the grapes. Robert Redford buys some grapes, takes them home and eats them out of the paper bag like an animal. Lots of grapes wrapped in paper, for that matter. Why? Why so many grapes? Where are the grapes coming from? What are the grapes trying to tell me?