Answer:
What is the building that you leave without ever having entered.
If there are three apples and you take away two, how many do you have?
Two fathers and two sons are in a car, yet there are only three people in the car. How is this possible?
Twelve pears hanging high, twelve men passing by. Each took a pear and left eleven hanging there. How can this be?
Feed me anything and I will live.. But feed me with water and I will die...
What did the piece of wood say when he saw the screwdriver and screws approaching?