A new cousin

We were sitting in the car on the way home from school. Grace was singing at the top of her lungs in the back seat. Gibson told me a couple of times that Grace was, in his words, "driving me nuts!" He asked her to stop singing a couple of times and finally looked at me and said, "I think I need a new tousin!" I asked him who he was going to get rid of since he only has two cousins, Cole and Corbin. He looked at me very seriously for a minute and said, "Grace."