Answer:
David's father has three sons: Snap, Crackle and?
What can point in every direction but can't reach the destination by itself
What superhero is terrible at their job because they always get lost and are late?
If four people can repair four bicycles in four hours, how many bicycles can eight people repair in eight hours?
What's at the head of an elephant and at the tail of a squirrel?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?