Embarrassed: Why does "little brother" always get an erection?

Boys are always embarrassed: even if the other person is a beautiful woman or a little brother, don't stand up and look at it in a hurry! The more you try to cover it up, the more disobedient it becomes ... In a sex education class for boys, the tutor asked the children to talk about their erectile experience, and everyone was not enthusiastic. But later, I was very enthusiastic, because my tutor first told me his unforgettable experience in middle school: "It's very interesting. When I stand in front of the blackboard to answer questions or stand in the auditorium to give a speech to the whole school, I always get an erection." Seeing the erection of the opposite sex, one of the students said, "I started to feel it last year." Once, I went swimming in the pool as usual, and suddenly I saw a woman in a bathing suit and a small cloth swimming in the water, so I got hard in the water. I dare not stop at once. Before it softens, I must swim hard and think hard about other things. "The water temperature is low, easy to soften the erection. But another student was once in a "unable to leave" situation. Once, after playing football, he ran into a video store to watch VCD. He couldn't help reading some envelopes of third-class discs, and then he got an erection. Erection is a natural thing. Another student was even teased: "They (other boys in the class) brought yellow magazines to read during recess and deliberately let me read them together. I watched it nervously and curiously for a while, and suddenly they put down their books together, grabbed my hands and feet, pressed them on the table, and pointed to my erection and laughed. It's strange that after this time. On the contrary, I feel that erection is a natural thing, and of course I will not be fooled again. "A man with normal automatic erection in adolescence will definitely get an erection many times in his life. There is a phenomenon called' automatic erection', which is particularly common in adolescence: without touching and sexual fantasies, he will suddenly get an erection, which is completely unexpected and unstoppable. As for seeing the envelope of the opposite sex wearing swimsuits and pornographic discs erect, it is more normal. If you don't get an erection every time you touch this stuff, it's still worth seeing a doctor.