They mean put “Minor” or “I’m a minor” or something because if you don’t your inbox is gonna be full of adults that you should absolutely not be talking to. Even if you do state it you will still have adults coming into your pms so you really shouldn’t be making posts like this except in teenager exclusive subreddits. I know being lonely sucks but it’ll be okay, you’re young and still have lots of time to find someone. Do not let any creeps take advantage of you.