Answer:
There are 5 sisters in a room: Ann is reading a book, Margaret is cooking, Kate is playing chess, Marie is doing the laundry. What is the fifth sister doing?
A man is able to contact his long lost brother who has never met. They agree to meet. When the brother arrives he is able to instantly pick him out from the crowd. How is that possible?
How do you blink twice without blinking twice?
What man can shave 10 times a day and still have a beard?
In 1990, a person is 15 years old. In 1995 that same person is 10 years old. How is this possible?
Before Google, we actually had to physically look things up in this building full of knowledge.