I’m tall when I’m young and I’m short when I’m old. What am I? Poor people have it. Rich people need it. If you eat it you die. What is it? What comes down but never goes up? What has a thumb and four fingers but is not alive? What has to be broken before you can use it? What has a neck but no head? What gets wetter as it dries?  

Do you see one man in this picture... or several people? If you look very carefully, you'll find 9 different faces in the picture; the 9th belongs to a dog.   The 4 pictures above are NOT animated. Your eyes are making them move. To test this, stare at one spot in each picture for a few seconds and everything will stop moving; OR look at the black center of each circle in the first picture, and it will stop moving; but when you move your eyes to the next black center, the previous one will move after you take your eyes away from it.     One face? Or t...