Schrodinger's Wave
When a person might be waving at either you or a person behind you. There is no way to know unless you turn around to check.
"Bro, I was stuck in a Schrodinger's Wave yesterday!"
"How so?"
"I saw this lady waving in my direction and I wasn't sure if she was referring to me or someone else. Turns out she was waving to someone behind me after I checked."
"Damn, that's rough bro. Must've felt awkward afterwards."
"How so?"
"I saw this lady waving in my direction and I wasn't sure if she was referring to me or someone else. Turns out she was waving to someone behind me after I checked."
"Damn, that's rough bro. Must've felt awkward afterwards."