Have you ever used brain teasers or jokes to deceive people?

There is a pig and a donkey in front of you, which one do you kill first? (answer: kill pigs, donkeys think so too; Kill donkeys and pigs.

This is a short story: Once upon a time, there was a king who liked hunting very much. One day, he went out hunting and found a very strange turtle, so he ordered his minister to find 100 such turtles within 30 days, otherwise his minister would be beheaded. He searched and searched, and only found 99 turtles when the deadline approached. In desperation, he ordered the craftsman to make an identical wooden turtle. After 30 days, the minister put all 100 turtles into a big pool, and 99 real turtles swam in the water, but the wooden turtles did not move. The king came to see the wooden turtle and asked why it didn't move. The minister replied, because this turtle is listening to my story!

Put a pig and a penguin in the refrigerator. Penguins freeze to death. The pig is really alive. Why? (Answer: Pigs don't know why)