A drain plunger including an elongate handle having a first end and a second end. A generally cylindrical chamber having a continuous side wall defining a void and having a first end coupled to the handle. A second end of the chamber forms a nozzle defining an opening in communication with the void. The side wall including a spiral pleat encircling the void and movable between a compressed position and an expanded position for imparting a vortex motion to water drawn through and expelled through the nozzle.