Mothers and Math

A teacher in one of the public schools put this question to little Jimmy in the math class, "James, suppose your mother made a cake and there were ten of you at the table-- your mother and father and eight children. How much of the pie would you get?"
"A ninth ma'am," was the prompt answer.
"No, no James. Now pay attention," said the teacher. "There are ten of you. Ten, remember. Don't you know your fractions?"
"Yes, ma'am," was the swift reply of little Jimmy, "I know my fractions. But I know my mother, too. She'd say she didn't want any."