I can't remember exactly what was said aside from "what the hell was that?!" so I'm already fudging the prompt, but the reactions during and after Killing of a Sacred Deer were hilarious. You could literally feel the bewilderment after.

Also, nothing was said during this exchange, but right after I saw Rambo 4, me and some older dude locked eyes and nodded at each other. It's like we had an innate understanding that we just watched something genuinely badass and could communicate it with a simple look and gesture.