Zac told Alice she would get to eat marshmallows if she pooped in the potty. Obviously misunderstanding, Alice made a face and said, emphatically, "I don't eat poop!"
Later, having correctly understood the concept and inspired by the promise of said marshmallows, Alice was determined to poop on the potty. As in, she was naked and refusing to get in her bath until she pooped, but still having trouble staying focused and sitting on the potty. All this eventually led Zac to declare: "Alice, if you poop on the floor there's no marshmallows."
