facial marination
when you let your hand(s) get all sticky from your ball sweat and then slap your friend so hard their face looks like it got hit by a bag of bricks
I let my hand sit in my ball sweat all day and then slapped my mom so hard her face looked like it got hit by a hammer.
I came home from the job and my hand was all sticky. I slapped my friend so hard his face looked like it got hit by a truck.
My hand was all sticky from my balls, and I hit my neighbor so hard his face looked like it got stepped on by a donkey.