Answer:
Two fathers and two sons are in a car, yet there are only three people in the car. How is this possible?
How is it possible to always find what your looking for in the last place you look?
There is a dog on one side of a lake and a woman on the other. The woman calls the dog over and when he gets there he is not wet at all. How is this possible?
What is the building that you leave without ever having entered.
A girl is sitting in a house at night that has no lights on at all. There is no lamp, no candle, nothing. Yet she is reading. How?
What is 9 added to any number ending in 1