A few days ago David did not want to do his homework, which really isn't any different from any other day because he hates homework but what makes this day stand out was that he had a valid excuse.  He said "Mom, I can't do my homework because my leg hurts."  Well, neither of us knew that he needed his legs to write with his hands.  Later, still without the work getting done he asked to go swimming and I reminded him that his leg hurt and he told me "It doesn't hurt when I swim, only when I do my homework."  Such a smart butt.