Face Rock
When you're so cool you don't even need the word 'cool', you just say 'they rock face.'
My brother is so cool, I said he rock face after he beat up a guy with a spoon.
My teacher is so cool, I said she rock face after she gave me a 100 on a test I didn't study for.
My mom is so cool, I said she rock face after she drove a car with one hand and a pizza in the other.