Why does my young male high school teacher enjoy teasing me playfully (as in being a jerk playfully)?

Your teacher might enjoy teasing you playfully as a way to build rapport and create a more relaxed classroom atmosphere. Playful teasing can foster camaraderie and make interactions more engaging, especially in a high school setting. It’s also possible that he sees you as someone who can take a joke, which can be a sign of mutual respect. However, it's important to ensure that the teasing remains respectful and does not cross any personal boundaries.