ok so my parents are gonna give me random drug tests and i cannot fail one(i know how to alter it but i have no time, like they say "take this test now") but here's the problem: i really wanna start again. so is there a way to get the THC out in like a day or two? because i plan to smoke only once after my tests so they dont have a lot of time to buy a new one. Also, if i smoke like every day for a week, how long should the THC stay in my system? what about only once? btw im 6'2" and 130pounds, very skinny. thanks a lot guys, this forum is really helpful edit: also is there a way to mess with a drug test so it says negative before i take it?