Why do we press harder on a remote control when we know the batteries are getting dead?
Why doesn't Tarzan have a beard?
Why does Superman stop bullets with his chest, but ducks when you throw a revolver at him?
If people evolved from apes, why are there still apes?
Why do people constantly return to the refrigerator with hopes that something new to eat will have materialized?
How come you never hear father-in-law jokes?