I only have the two three year olds so they don't much ask questions, but I don't use the term CP much either. In fact, my husband once asked if I've ever specifically told my family that Julia has CP, and I honestly cannot remember (I know I told them she was at increased risk for it when she was discharged from the NICU, but after that I don't much know). I don't think of the actual term that much, because it doesn't mean anything specific. If somebody tells me their kid has CP, well okay, what does that mean for him? I like your answer to Rio, it is kind of what I have prepared to tell any kids that ask why Julia does/does not do something.