Piss test in Approximately a week..

My parents are getting a piss test in a week and I had smoked about once or twice a week for the past month, and the past 2 days I've smoked like 4joints of Purple Erkel weed... is there any way I could clean out my system of this shit in a week, or am I going to need to fuck with the test? If so I'm planning on following N2's guide, putting mad water in the test, and putting a thing of visine in the test... any other/better suggestions? All help appreciated... thanks

hey read my post below this (now it is)