1. Follow your heart
  2. Don't count your chickens till they're hatched
  3. Never give up
  4. Look both ways before crossing the street
  5. Wash your hands before eating
  6. Floss between meals
  7. Don't talk back to your mother
  8. Don't fire till you see the whites of their eyes
  9. Remember to shoot them in the head
  10. Never go in against a Sicilian when death is on the line
  11. Don't feed them after midnight
  12. Don't get them wet
  13. Keep them out of direct sunlight
  14. Run!
  15. Don't wipe yourself while wearing finger puppets
    Suggested by @mallofamanda
  16. Let them talk first
    Suggested by @furtadomf