It took five hours because floyd didnt have the fluids to fill the urine sample. I thought he could have easily shorten that time by just drinking water, but he seemed as if he liked having the guys around him so he was sipping the water over the course of 5 five hours. He could have downed a 64 ounce glass and it would have came right out considering how much shape he in, the body would have broken down water into waste in no time...