A Zen koan is a paradoxical statement or question designed to trigger spontaneous enlightenment as you contemplate its deeper meaning:

• If a tree falls, and no one is there to hear,
  does it make a sound?
   
• What is the sound of one hand clapping?
   
• Before enlightenment: chop wood, carry water.
  After enlightenment: chop wood, carry water.

Parenting is fraught with paradox, so it shouldn't be too hard to come up with some koans just for us, inspired by our little gurus. :) We might begin by modifying existing koans:

• If a baby cries and no parent is there to hear,
  does it make a sound?
   
• What is the sound of one breast feeding?
   
• Before enlightenment: chop wood, carry toddler.
  After enlightenment: chop wood, carry teenager.