Maybe this is bad advice, but I will genuinely smile and wave at people who are staring/glaring at me. Or if we’re close enough, I’ll literally say hi and kinda start a conversation. “Oh hi! How are you doing??”
They often don’t know what to do, because in their head you were kind of a figment of their imagination, they never expect you to acknowledge them and actually be pleasant, because they’re so miserable.
Often they’ll just look the other way with their bitchface, but then it’s quite funny that they can’t even handle someone being kind.
Like, do you think I can’t see you looking at me (how stupid are you)? Hi!
As much as possible, I pretend they’re just being friendly or I used to know them. That’s my acting motivation.
It really fucks them up. lol
Sometimes it shocks them out of their staring and you actually talk to them too. Which is especially funny because they begrudgingly go along with it.
I love to kindly torture dickheads, and if it works out maybe they can stop staring at people.