Answer:
What has to be broken before it can be used?
What looks back but cannot see?
I am nothing but holes tied to holes, yet am strong as iron.
What has 4 legs in the morning, 2 legs in the evening and 3 legs in the night?
Whoever makes it, tells it not. Whoever takes it, knows it not. And whoever knows it wants it not
The sun bakes them, The hand breaks them, The foot treads on them, And the mouth tastes them. What are they?