The phrase "wet rag" refers to a cloth or towel that is soaked in water, making it damp. It can also describe a person who is lacking energy, enthusiasm, or motivation. Full definition
When you're ready to start breastfeeding, try to draw your nipple out and then take a cold wet rag (or breast pad) and apply it directly on the nipple. (pumpables.co)
Robert Lee and Brittany would hit Lauren on the backs of her legs with wet rags or hand towels, later explaining that this way there would not be bruising. (notjustforlawyers.com)
Begin cooling your dog by placing cool wet rags on the body, especially on the foot pads and around the head. (sandiegopethospital.net)