Whenever I see a uniform grid, particularly one tilted at a 45 degree angle, I see a cat. A big cat, like a tiger.
Don't see it? Let's color it in a little.
That's pretty much the level of detail that jumps out at me, though I can add some characteristic features to make it more obvious.
See it? Now look back at the top grid, and try to see it there.
I see this everywhere. Chain link fences. Tiled floors. Rubik's Cubes. Graph paper. Anything with at least 3x3 squares. And it's been this way pretty much my whole life.
It wasn't until recently, though, that I ever mentioned it to anybody else, or tried to convey visually what I see.
If he were fancier, he'd look like this: