A Milkmaid went to market with her pail on her head. She was lost in thought about the profits and what she will do with them and tripped. No more milk. Do not count your chickens before they are hatched.
The Dog ate an Oyster thinking it was an egg. He suffered greatly in his stomach due to this rash action. Dog should have thought before acting. They who act without sufficient thought, will often fall into unsuspected danger.