Answer:
In 1990, a person is 15 years old. In 1995 that same person is 10 years old. How is this possible?
What moves and touches water but doesn't get wet?
If you count 20 houses on your right going to the store and 20 houses on your left coming home, how many houses did you count?
There are two sisters: one gives birth to the other and she, in turn, gives birth to the first. Who are the two sisters?
How do you drop an egg and never break it?
What is always coming but never arrives?