Why are some jokes not funny?

The girl's question to the boy (super classic) "You just don't want to talk to me!" She made it very clear on the phone. "I don't want to talk to you? I also sent you an email yesterday. " I said. "Then why don't you talk to me in the chat room today?" She said. "Why didn't I tell you? Why don't you admit it when you just get off the assembly line? " "I told you first, and you ignored me at first." She said. "Yes, I just went in and didn't find you, so you called me." "You are typing so slowly today, you must be chatting with someone else." She said. "My family is asleep, so I can only type lightly for fear that they will hear me." "Forget it, I said I was getting married, and you said you would wait a year." She said. "We haven't money to get married. You have only seen my photos. " "You mean I look not as good as photos? I cheated you, didn't I? " She said. "No, no, I don't care what you look like. I like your personality. " "Then I'm beautiful and white, aren't I?" She said. "Which. Perfect looks are the most suitable. " "In the future, you should be special to me. You, you call to smoke. " She said. "I didn't." "I heard everything. My mobile phone is highly sensitive. " She said. "I just sighed." "What are you sighing about? Are you bored? " She said. "Why not? I am a good-tempered person and will not be disturbed at all. " "That still bothers me, because you have a good temper and you don't bother." She said. "I'm really not bored. Let me tell you a joke. " I said. "You transfer target again. Do you think you are bothering me? " She said. "I'm really not bored, I swear." "You can't do anything else when chatting with me, and you can't talk to others." She said. "That's, that's, I can't do anything but chat with you." "The last time you called me, you ate. You don't respect me. " She said. "I'm so hungry, I won't do it again." "You don't keep your word. You are making tea now. " She said. "What? Me, I didn't. " "You lied to me, I heard you." She said. "I, yes, I'm a little thirsty." "If you are thirsty, you can tell me that you lied to me that you didn't drink." She said. "I ..." "You just don't pay attention to me! ! "She said and hung up the phone. I just stood there with a phone in my right hand and an empty coke bottle in my left. It's not completely empty, because I was really afraid to leave my cell phone to go to the bathroom just now.