Scrotal infusion is a sexual and body modification practice. It involves injecting fluid into the scrotum to temporarily increase its size to abnormal levels. Infusion allows the fluid to seep into the scrotal tissues slowly, with little discomfort or pressure. It is considered a medical procedure, and it comes with risks. Complications include subcutaneous emphysema, scrotal cellulitis, and Foumier's gangreneor air embolism.