My signature move is waving at someone who is waving at the person behind me.

Commentary:
"Ah, the classic maneuver of unintentional social awkwardness! πŸ™‹β€β™‚οΈπŸ™‹β€β™€οΈ Always keeping on your toes by keeping everyone guessing. Who needs a wave back, anyway? πŸ€·β€β™‚οΈπŸ˜„"