What are the short but interesting jokes?

For example, the teacher told the students: "Don't call yourself the author when writing articles in the future, because now, no one uses pens." The student asked, "What should I call it?" The teacher said, "Call the key man." The student asked again, "Oh, what about those who only use the mouse?" The teacher said, "Call it a mouse." The student asked again, "But now everyone uses smart phones, all of which are touch-sensitive. What should they be called? " The teacher said, "This is called touching life!"