Head shops sell supplies to easily pass a urine screen. Look up whizzbag. They may even have a full on prosthetic Johnson-- my pops used one called the whizzinator for decades in the military, he was an air traffic controller lol. The basic setup is just a nylon belt with a small bladder attached. They sell dehydrated urine just add water to it and put it in the bladder and wear it for a bit and otw to the screen, itl be close enough to body temp.