Fun Riddles

Question: You put me in hard.
But then I become soft.
Blow me hard and I will get bigger.

What am I?

Question: A man was driving a black car. His lights were off. The moon shown no light. A cat was in the middle of the road. How did he know to stop?

Question: What has to be broken before you can use it?

Question: What is it that after you take away the whole, some still remains?

Question: What's the difference between a well-dressed man on a bicycle and a poorly-dressed man on a tricycle?