Facebacking
When you judge how someone looks just by their back head, then give them a score out of 10 before you even see their face.
I gave my coworker a 2 out of 10 because his back head looked like a wet dog.
I scored my friend’s crush a 9 because he had a cool haircut from behind.
I rated my mom a 3 because her back head looked like a hairball.