Eliza's Deal

Tonight we were gathering books for bedtime. I told Eliza we could read three, and she wanted four. So I said we could read three in the chair, and fourth after she got in her bed. She agreed, so I shook her hand and said it was a good deal.
She nodded, and then said, "I have a good deal for you."
"What's that?"
"How about you only shake hands when you meet people, and not other times. That's a good deal."
That's good comedy.