Answer:
There are two sisters: one gives birth to the other and she, in turn, gives birth to the first. Who are the two sisters?
How do you blink twice without blinking twice?
How can you throw a ball 20 meters, and have it come back to you without hitting anything?
Lauren lived in a light house. He was so tired that he turn off all the lights and fell asleep. The next morning the realized that he killed 6,000,000 people. How?
In 1990, a person is 15 years old. In 1995 that same person is 10 years old. How is this possible?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.