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An optical illusion that was first found on Reddit is going viral because it's very difficult to figure out what the fuss is about on your own. Unless, of course, you do see the illusion quickly, in which case congratulations to you. You're a winner.

Here is a boring old brick wall.

Think carefully about this brick wall. Take all the time you've got.

It's a scientifically unproven fact that head scratching helps the thinking process.
It's a scientifically unproven fact that head scratching helps the thinking process.
Sources: h/t BroBible