What else don't I know that I know?!

There it is, put that test at the border crossings.

I'm confused. It says shape-color but I'd say for example "the brown square hammer" the square brown hammer" interchangeably

However this rule gets cancelled by the i-a-o rule. That's why it's big bad wolf not bad big wolf. Tic-tac-toe, tic toc, ding dong etc. all follow this rule because it'd just sound weird otherwise