I've had mental disabilities since my teens, a few decades now. Unless I'm totally out of it, these are invisible disabilities. When I'm out and about and not well, I've learned a lot of tricks in how to be politely antisocial in public. I'm case you're interested, I'll share a few tips:
- WEAR SUNGLASSES: For some reason people are intimidated when they can't see your eyes. So sunglasses are pretty much a conversation stopper.
- WEAR VISIBLE EARBUDS OR HEADSET: You don't even have to have the volume on if you don't want to. People just assume you're listening to something so typically won't bother you. And if they do, say, "just a sec", and fumble with your phone, remove your earbuds/headset, then give a quick answer and replace your earbuds/headset. That typically gets rid of them.
- HAVE A PRETEND CONVERSATION ON YOUR PHONE: Pretend to be talking to someone. Or pretend you need to call someone urgently if someone starts talking to you, then dial or fake dial someone.
- PRETEND TO BE A FOREIGNER: Just say "no speak English" or Spanish or whatever the local language. Beware people might try to prompt you with lots of languages, but just keep repeating that you don't speak the language. Do not say what language you speak under any circumstances, or your cover will be blown. Think FBI secret agent.
- HAVE A BOOK: Pretend to be reading a book. People will rarely disrupt you while reading.
- READ ON YOUR PHONE: Again, if you're reading in your phone - news, texts, a book, whatever - people are reluctant to bother you. And if they do, just answer quickly and return your gaze to your phone.
- THE LOUD SIGH: If all else fails, there is always the Loud Sigh to fall back on. It is always with you, always available 24/7. Remember the person doesn't know you, so letting out a loud sigh can mean anything. So it will give them pause for thought, including that you might be bothered by them. But they don't know you, so they're unlikely to ask you if they're bothering you, as then they might well be accusing you of being rude. And if they are bold enough to ask you, just smile and look away, politely of course. 😊