Recently, we did a roundup of a Reddit thread asking, "What plot twist should you have figured out, except you wrote off a clue as poor filmmaking?" which got me to thinking about excellent moments of foreshadowing in movies.
In a way, you could even say that that roundup foreshadowed this post.
So with that in mind, what's your favorite example of blink-and-you'll-miss-it foreshadowing in a movie? Something so smart and so quick, you don't even realize it's foreshadowing until the very end of the movie — or heck, maybe until you rewatch it?
Maybe it's something subtle but striking, like Adelaide's inability to snap on the beat in Us (2019), which foreshadowed that she's...let's go with "not who she says she is."