What goes up but never comes down?

Why do Chinese men eat more rice than Japanese men do ?

How many squares, of any size, can you find on this chessboard which do not contain a Rook?

What kind of tree can you carry in your hand?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside. The man said, "Oh! I am really sorry, I thought this was my room." He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man. What made her suspicious of that man? He might have been genuinely mistaken.

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?