I beg to differ with all of your oppinions. I am an addiction counselor and let me tell you that legal drugs are far more addictive than illegal ones. Is taking Nyquil to quickly relieve cold symptoms wrong? How about Xanax for anxiety? Advil for a headache? Is the person who has a glass of wine after work to take the edge off of a stressful day more moral then the person who takes a few puffs of weed? Because it's illegal? In that case, let's tell the cancer patients in CA that they can just suffer with pain and nausea. Before you all judge me and my success or failure as an addiction counselor, let me say that you don't know what you're talking about. Eighty percent of the clients at our facility are addicted to what their doctors prescribed them, which are the drugs du jour that the pharmaceutical reps gave them incentives to prescibe. They are Lortab, percocet, and other opiates (yes opiates). Using a drug is not immoral, but abusing a drug may be, depending on your beliefs. It's self medicating, that's what living in this country teaches us. It's really not as bad as you're making it out to be. And the drunk surgeon analogy is just aweful. It's like comparing apples to SUVs. Using drugs IN the work place is stupid, don't get me wrong, but who are you people to judge this guy for asking this queston? If you want to question his ethics for switching his urine, that's one thing, but you're on a witch hunt because he uses a substance that albeit illegal, it's effects are far less harmful or lethal than alcohol. Why don't you thump those bibles at the alcohol and tobacco industries; they are responsible for far more deaths than marijuana smokers. Moderation is not a sin. It's just that Marijuana, the least dangerous drug, stays in you system 10x longer than any other drug. I have clients who are addicted to Xanax and opiates like Lortab (for back pain) that take a UA Monday morning, get plowed out of their mind the rest of the day and then pass, that's right pass, their UA Tuesday afternoon. This is true for most "har-core" drugs (3 days for most). I think you're labeling marijuana and its users because the drug is illegal, understandably, but pour out that glass of wine or smash out that cigarette before you do. You're doing more harm to yourself, and others, than a person who smokes a joint from time to time. Addiction is when your substance use is affecting several areas of your life and, without it, you experience physical withdraws or you tolerance increases from its continued use. And making up an excuse for being late to work or calling in sick when you're really not, that's fraud, too. And to answer the original question, you should not have filled up the rest of the cup with your own urine. The amount you had, though less than desired, would have been sufficient. Good luck to you.