How to write a good joke song?

The thief stole a chicken and plucked its hair by the river. When the police passed by, the thief threw the chicken into the river and explained to the police: This chicken is swimming, and I help it look after its clothes. A farmer's daughter was so ugly that he had to let her be a scarecrow in the corn field to scare crows. As a result, not only did she scare away the crows, but even three crows sent some corn back in fear. The tortoise said to the mouse, "I work in a five-star hotel!" " ""nonsense ""really, they made soup from my bath water just now. "When the leaders visited the countryside, the village chief asked the farmers to shout slogans and just repeated the last two words. When the leader arrived, the township head shouted "Stop whoring" and the farmers followed "whoring! Hey! "On the bus, the pregnant woman standing said to the strange man sitting next to her, don't you know I'm pregnant? I saw the man very nervous and said, but the child is not mine! A customer angrily ran into the tailor's shop, pointed to the fashion designed by the owner and said, "I was standing on the street corner yawning, and two people put letters in my mouth!" " "A foreigner who has learned a little Mandarin. Say hello to the secretary in the morning. "How are you?" The young lady stared at him. He paused and immediately said to her, "Hello, Mom!" " A leader made a report: "Now men and women are equal, and lesbians stand up." ... "All the lesbians present stood up and waited for instructions. The leader turned over a page, which read: "Le"