Answer:
I am as hard as metal, yet as flimsy as glass. I shine like a star, yet I am only a rock. What am I?
I walk on 4 legs in the morning, 2 legs at noon, and 3 legs at night. What am I?
I can be sweet or sour. I do not rhyme with any other word
I cannot be burned in fire or drowned in water. What am I?
What can one catch that is not thrown?
What language does a billboard speak?