What jobs drug test? Whats the best way to cheat the test?

[Nuclei]

Ok, im 14 and ive recently discovered how great life really is with weed.
I was wondering what jobs drug test you? Will mcdonalds drug test you? wat sorts of jobs test you, and what type of test will they give you (urine, hair follicle, blood?)And whats the best way to cheat past a job-drug test (flush pills, detox drink, synthetic urine, additives, etc? )

Also, my dad recently found a pipe of mine, and is concerned about me smoking. He is going to buy an at-home drug test kit. I don't plan on smoking every day, just a few days a week with friends. But i need to be able to pass a random test that my dad gives me... i dont think those drink things would work, cuz id have to drink it an hour ahead of time, and i dont even know if it works, it sounds very risky... what about if i use someone elses piss? I tihnk that would be the easiest, cuz i know that my dad wont watch me take a piss... anyways if yall can help me out please do, i havent smoked in over a week and im really craving...
Also, what about when you get piss tested for a job, does thedoctor watch u take a piss?