Whose Hellos Are These, Anyway?

In an eccentric town where every stranger greets you with a peculiar salutation, you are tasked with unraveling the mystery behind a sudden wave of curious hellos that are influencing the townsfolk's behavior. As newcomers arrive, they threaten to plunge the quirky community into chaos. Navigate drunken town hall meetings, decipher cryptic social cues, and confront a multitude of quirky characters, each with their own motives. Can you identify the source of these bizarre greetings before the town succumbs to nonsensical greetings forever?