Abstract: Described is a device and method for blocking or impeding the flow of fluid through the overflow drain of a bathtub. A device may include a stopper configured to wrap around the lower/underside of a variety of shaped overflow drain cover plate(s) and be removably held in place by a suction cups attached to the bathtub wall on either side of the overflow cover plate. The device takes the form of a stopper comprised of a flexible, elongated body of cloth material configured to cover the overflow opening. The same device may also be used as a method for diffusing bubble bath as a bathtub fills with water by pouring bubble bath onto the center of the body of the device, attaching the suction cups to a variety of designed faucets and placing the flexible, elongated body into the flow of the water thereby creating a churning of the water as the bubble bath mixes with the water flowing into the bathtub.