Take a crap on her
From Create Your Own Story
Unfortunately, you had been having diarrhea problems for the last couple of days, and right now you really needed to take a shit. You decide to use Julia as your toilet.
You drag Julia to the floor so that she is lying on her back, and you are on top of her. You trap her arms under your knees so that she can't escape, and pinch her nose so she is forced to breathe through her mouth.
Then, you position your ass so it is directly above her face, look into her eyes, and tell her, "Julia, I'm going to poop on you." At this point, she starts freaking out, but since she is breathing through her mouth, she cannot scream or make any other noise, so all she can do is try to squirm out of your grasp. Julia is hyperventilating, scared for what is about to happen to her.
You exhale as you let out a large, warm dump directly onto Julia's face. Her entire face is covered in your brown, partially-watery poop, including some of it that went into her open mouth.
Suddenly, your half-asleep mother opens the door - wearing only a sleeping gown - and sees you sitting on your sister, her face covered in brown. Her face turns to shock.
What happens next?