(Irish ancestry here: Letting them know that you’ve got redheaded relatives is the secret cheatcode to let you stay unconscious during surgery. There’s a whole protocol about it.)

It’s a common english phrase in general, though. Let’s not allow pedophiles to claim it as some kind of dogwhistle.

Shoo! Don’t make me get the broom!

Is this what passes for bait these days? Shoo, go on, git. Back to your imageboard.