What's so funny?

Yu-Ching Fei told a dirty joke: Ass and Shoutao (Children's Classic Edition) The child saw his father wearing clothes and asked: Where are you going, I want to go with you? Dad said: Today is not suitable for children. I eat someone else's birthday. Then you can't talk nonsense. Child: Dad, I'm leaving. I'll stop talking. I'll just eat. Dad: OK. No talking! I ate all the food and didn't speak. By this time, I'm almost done eating. Bring the peaches. The child looked at the steaming peach and said, Dad, Dad, look, steaming red ass ... Dad: Bao Xiao, why are you talking nonsense? What a sexy ass ... He broke off a peach and said, "There's shit in it!" " "