Whether you're sitting at home trying to decide what to watch on Netflix or standing in the lobby of a cinema like some sort of caveman, movie posters are important. You've probably stared at thousands of posters over the course of your life before deciding that, fuck it, you're just gonna watch Hot Shots! Part Deux again. We've all been there.
That's why we're always surprised when we notice that famous actors tend to do the exact same oddly specific things in almost every single one of their posters, for reasons that are beyond the comprehension of common mortals like us.