Answer:
What goes up the hill and down the hill, And spite of all, yet stand still?
A man was sitting on his couch and searching for the English Channel. How did he find it?
When does 4 - 1 = 5 ?
Mr. Smith has two children. If the older child is a boy, what are the odds that the other child is also a boy?
What can fill an entire room without taking up any space?
I only exist when you are here. Where you never were I can never be.