I want to keep smoking weed. I have to pass the drug test though.

[C.R.E.A.M.]

In about a year's time, I know I will be taking a drug test for something. I'm a light weed smoker; about 2-3 times a month. I'm almost positive this is how it will work: I will be followed into the bathroom, but then they will leave and I can piss alone. I need help from you experts. Is there a pill or device that actually works that will get me to pass the drug test so that I don't have to curtail my weed use? Any personal trip reports? If not, how long do I have to abstain from weed to get it out of my system? Any other info I should know about this?

I will also be googling for information, but I just want to hear what some real, unbiased people, whom I know aren't trying to sell me a product, have to say about this.

I have no qualms about "cheating" the system and using some trick to fool the test, so please spare me any moral objections to this post.