It’s always so awkward when you’re in public and all of a sudden, someone shows up who looks like a person you know and you just end up staring and staring and staring at them. And then they turn their head and look straight into your eyes. At that exact moment, you realize “nope, that’s not them” and quickly turn your head. You could say something, but I think this comic shows that it might be safer to not say anything at all =)