My two childhood friends assume that I suffer from premature ejaculation and am a virgin. It's frustrating, but it's true. They decide to cure my premature ejaculation! They start training me to improve my premature ejaculation without my permission! "What? Wait a minute!" They don't care about my confused feelings and just keep stroking my dick! Of course I cum instantly! Then the erotic switch of the two childhood friends is fully turned on, and it turns into a threesome! I cum instantly here too! Of course, the two childhood friends are not satisfied and keep asking for more! As a result, the training to improve premature ejaculation turns into a storm of erotic threesomes!