Grace was coming down the stairs at my mom's house on her tummy, head first. Neglecting the potential danger she was in (I am such a great mom), I laughed and said, "Grace, you are the silliest!"
She was visibly offended. Or at least, she would have been visibly offended had her face not been buried in carpet. "Mom, I am not the silliest. I'm the greatest!!"
Apparently silly has a negative connotation at our house.