Embarrassing moment

If you were waving back and that is when you say, "Pesky fly". lol

That horrifying moment when they aren't waving at you, even though you're the only one around.

I usually just keep waving like a weirdo. Yah I should stop doing that...

Everytime...

.... Or wasn't talking to you

Then you walk away as casually as possible without drawing more attention. Yeah, I've been there.