Monkey Dong fake urine is a synthetic urine product designed to mimic the appearance, temperature, and chemical composition of human urine. It is primarily used for various purposes, such as passing urine drug tests or calibration of urinalysis equipment. The Monkey Dong kit typically includes a synthetic urine pouch, a temperature strip, and a delivery device, such as a prosthetic penis (the "Monkey Dong"), which allows users to discreetly dispense the fake urine.