I loved this one today:
My DD complained that elementary school teachers spend too much time telling kids they have to do something because they'll have to do it in middle school. Says she:
"We should just get to live in the present. If we have to live in the future all of the time we'll never get to actually experience anything!".

(now I guess I have to stop telling my fifth graders that they can't wear their coats in class b/c it's not allowed in middle school.... blush )