Even if you haven’t seen The Matrix, you’ve probably heard of it. The 1999 movie started a franchise and even made its way into our modern language.

In “The Matrix”, beloved Keanu Reeves learns he’s spent his entire life living in a simulation. Sorry — spoiler alert. The idea captured millions of people around the world. Since then, we’ve adopted the phrase “a glitch in the Matrix” and implemented it into real life.

Of course, we don’t live in a dystopian reality where humankind is in a simulation. At least, we probably don’t. So, in the real world, “a glitch in the Matrix” refers to a moment where something is so bizarre you doubt it’s real. You might even wonder if the strangeness is caused by an error in the “simulation” of the world.

It doesn’t have to be something dramatic. People feel like reality is glitching simply by seeing two similarly-dressed people standing next to each other or having light playing tricks on their eyes. Sure, it might not be an actual glitch in the Matrix, but it’s sometimes a glitch in our brains and how we perceive reality. And sometimes, it’s just a really funny coincidence.