Answer:
I sleep by day, I fly by night. I have no feathers to aid my flight. What am I?
You have to travel far before you turn it over. What is it?
What is the difference between a poorly dressed man on a bike, and a well-dressed man on a unicycle?
I am always in front of you but you will never see me
I am a busy worker who is a water mammal.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.