Are there any small jokes in classical Chinese?

original text

The scholar was nearly seventy years old and suddenly gave birth to a son. Born in age, that is, named age. A little later, I gave birth to another son, who seems to be able to read and learn by name. The next year, another son was born. He smiled and said, "It's a joke to have a baby at such a big age." Because of the name "joke". When they were old and had nothing to do, they all ordered to go to the mountains to collect firewood and go home. The husband asked, "Who has more firewood for the third son?" The wife said, "As you get older, you have no knowledge at all, but you have the burden of jokes."