When chatting, what jokes have made you laugh so much?

My mother was calling her aunt on her mobile phone. After a while, the landline at home rang, and my sister answered the phone. Sister: "Hey, who are you? Who are you looking for?" Phone: "I'm looking for your mother." Sister: "Mom, the phone is for you." Mom put down the phone and said to her: "Let her wait first." Sister: "My mother asked you to wait first, she is on the phone." When no one responded, my mother answered the landline: "Hello, who is there?" My sister heard someone talking on the mobile phone, and my mother answered the landline again, so she took it over : "Hey! My mother is answering the landline, please wait." Mom: "Your mother is answering the landline? Isn't she calling? Who are you? What's your name?" Sister: "I am her daughter ХХХ." Mom grabbed the phone and looked at it: "Oh! Why did I hear a call came from my phone?" Sister: "..."