Sister: Why does shampoo have directions?
Me: 'Cause God made you.
Sister: Why does shampoo have directions?
Me: 'Cause God made you.
Hey, listen up, dummy! The sister asks why shampoo has directions. The person answering implies that the sister is dumb and needs the directions on the shampoo bottle because God didn't give her any brains. You probably also need shampoo directions, you mouth breather.