Answer:
How can you place a pencil on the floor so that no one can jump over it?
In 1990, a person is 15 years old. In 1995 that same person is 10 years old. How is this possible?
What coin doubles in value when half is deducted?
An archaeologist unearths a coin bearing the inscription "57BC". How does he instantly know that it's a forgery?
On Christmas eve, when Santa leaves his workshop on the north pole, what direction does he travel.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?