And the Lesson Backfires

So I am trying to get the kids off to school as usual and they are being sooooo slow.  They love to dawdle.  Anyway, so I'm trying to rush them along, saying "Come on, come on."  My son takes his time, turns to me and says "Slow and steady wins the race, Mom."  I hate that when that happens.  They listen and then have the nerve to turn a fable against me.