Each of these puzzles relies on the solver making a mistaken assumption.
1) Two identical children born on the same day to the same mother and father are not twins.
How is this possible?
2) A certain man had great grandchildren, yet none of his grandchildren had any children.
How is this possible?
3) You are on a plane, a mile above sea level. Huge mountains lie directly ahead. The pilot does not change his course, speed or elevation. Yet you survive.
How is this possible?
4) A woman has a bucket of water in her hands. She turns it upside down, but the bucket stays full. There is no bucket lid, the water is in liquid form, and she is not relying on centrifugal force.
How is this possible?
5) A clean-shaven teenager told his parents he was going to a party, and would be back before sunrise. He got back before sunrise, and had a fully-grown beard!
How is this possible?
6) A boxer left a contest victorious, winning the national championship. Even though his trainer took all the money, the boxer was quite happy.
How is this possible?
7) Identical twins Milly and Molly always wear the same clothes. One day I saw one of them and I shouted hello. As soon as she turned to me I knew it was Milly.
How is this possible?
8) A woman working in an office is sacked from her job. The following day she shows up at the same office, where she is welcomed.
How is this possible?
9) My neighbour is 92 years old and frail. One day I invited her round to do something I was not able to do. She was able to carry out the task, even though she has no skills that I do not have.
How is this possible?
10) One day a man saw the Sun rise in the west.
How is this possible?