Good son: grab her ass fully with both your hands
From Create Your Own Story
You dig right into her grabbing her small butt with both of your hands.
"What are you doing?" your sister asks you. "Don´t grab my ass like that you pervert! I am your sister you shouldn´t be doing shit like that."
You quickly pull away and tell her you were just joking around.
Your sister pulls herself up and is now sitting at the far corner of the coach making it impossible for you to touch her.
You keep watching tv with your sister until the evening.
