A Thumb Sucker for Life

Grant and Grace were sitting on my lap tonight while Grace was reading to me. Grant turned to me and said, "something, something, and go to bed". I kept asking him what he was saying and he kept saying the same thing. After about 6 or 7 times, he said it again but this time held up his thumb. Then I got it. He was saying, "I want to suck my thumb and go to bed."