Scrotal inflation, or scrotal infusion, is a sexual practice in which fluid (typically saline solution, but sometimes air or another gas[1]) is injected into the scrotum in order to make it balloon in size.[2] It carries a number of risks of serious complications, including scrotal cellulitis[3] or subcutaneous emphysema,[1][4] and possibly fatal complications such as Fournier's gangrene or air embolism.[3]