I want a joke with subtext

Let me tell you a joke first.

Wan Lin is one of the few new teachers in the school. If you add the two conditions of being male and single, then he He is the only teacher among more than 100 teachers in the school. Coupled with his age of 30 and height of 1.75 meters, he immediately became the target of single female teachers in the school. They ranged from a 22-year-old computer teacher to a 35-year-old English "foreign teacher", but after a round, none of them fell in love with Xiao Wan. Some were "not pretty", some "lived in a village", and some were "not gentle enough". Some of them were "like a mature lady", some were because of being a "contract teacher", and some were because of "lack of civility and courtesy". In less than a year, Xiao Wan offended all the single female colleagues in the school. The security "section chief" Lao Yu saw this and was anxious because he wanted to tell Wan Lin about his niece. In terms of height, appearance, and work, Lao Yu felt that he and Wan Lin were a perfect match. A perfectly matched pair would offend many single female teachers in the school. He still felt that he couldn't bear it. Now that the successive attacks on Wan Lin in the school had finally come to an end, he found Wan Lin and expressed his thoughts. Wan Lin I was quite happy and agreed to meet him first. After meeting, Lao Yu first talked to his niece, and then came to the dormitory where Wan Lin lived: "Look at the person, I have introduced the family to you, you can talk about what you think!" "The head is really good, It's not difficult to live in the hospital, but..." "Don't be embarrassed, just say anything!" "He's got a bad temper, isn't he?" "Is that so arrogant?" "Yes!" "You don't want to?" Stretch, stretch later. Didn’t you say that your father is going to help you go abroad? If you stretch it longer, you can become a Japanese! "Let's go, Lao Yu! After that, Wan Lin was still proud: "Ha! Japanese! It's not impossible! Japanese... people?...long...stretch, after...stretch..." Wan Lin suddenly felt that something was wrong and stood up. He stood up and said bitterly: "This wicked Lao Yu!"

Joke analysis: On the surface, Lao Yu is saying that you can stretch your hair longer, pull it back, and marry a Japanese woman. The implication is Say, stretch your genitals longer, pull them back, and fuck yourself!

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