URGENT!!! I need help quick!!!!!

ok my friends mom is a pshyco and she is gunna test him sometime this week he smoked this morning and he only took 5 hits he has green tea and lots of it i heard that helps. if so does it matter if its cold or hot? also i heard about super concentrating urine like drinking a bunch of different liquids in one night and your piss will be so concentrated the test cant detect it. and can anyone please tell me any other ways to get it out of your system fast. oh ya he also is going to buy some niacin and vitamin b tomorrow

well i never take the test my self i would just get a freind to help because i hate wondering if im gonna pass it but other wise tell him to keep drinking that green tea and water and and also do the drink lots of water and take the vitamins and itll concentrate the urine hope that helped

drinking alot of water is the only for sure way if your gonna smoke and have a drug test water is the only way i dont trust kits cause my friend failed a test with a kit so water is the only 100% way