Sadness
Lucy comes out of her room babbling excitedly.
I ask to the room, "Is that Lucy happy, or Lucy sad?"
"I'm neither," says Lucy, "I am just a little disappointed."
"I'll just pretend it is Lucy happy," I say.
"That makes me sad," says Lucy.
"Well, that isn't my fault, is it? If you had been happy, I wouldn't have to pretend."
"So my sadness is my fault, because it started with my disappointment?"
"Yeah Lucy. That's how the world works."