I tell my four-year-olds they're so smart, they should kiss their brains*: kiss their palms and then pat their heads.
Because they are smart. And you are too, so you should kiss your brain.
My kids are actually learning. I don't know if it's because I'm teaching them or because they already knew, but they know the difference between a triangle and a circle.
Did you kiss your brain? Do you think it's silly? I did it in front of my class. Kiss your brain. You deserve it.
*I should note that I did not come up with this. That's a TFA thing.