theres a couple things you guys haven't mentioned yet, if you have 4 days before a UA get some Ectasy, i went to a rave took two E-Bombs (one was a tan mercedes the other was a white dolphin) i come to find out the tan one was what the call an "h-bomb" meaning it was loaded with about 75mg of heroin (yes 75mg's all you guys bout to flame me i had one tested) anyway needless to say it wasn't my best XTC experience after i took the tan one....i had a suprise UA when i got back from the rave, tested clean, XTC being a meth relative is a extreme diuretic, but XTC is way more so then meth, XTC complelty changes the hormones in your body that are responsible for water retention (this is why so many kids die/pass out from both dehydration and water poisoing at raves)
also there is giving them about a thousand false positives or reasons why you may have THC metabolites in your urine, this worked for my bud you go to a hippy store and buy some of those all natural "HEMP" products (yes the legal ones) this will cause you to fail a UA heres the kicker you give em the wrapper off of the bar before you turn in your UA and say "oh i've been eating these for days i hope they don't show up" also hemp oil (an excellent alpha and omega source!) will cause you to fail. there are lots of things that can give false postives in which case they will either pass you or adivse you to stop taking whatever caused this so called "false positive" and retest you...its really easy to get weed out in 7-10 days! every illegal drug has a legal counterpart that will give false positives...like if your on opiates just drink a bottle of robo-tussin max strength (kinda a weird expereince) it contains about 300mg of synthetic morphine...if you drank a whole bottle the nite before you took a UA your UA results would show deadly concentrations of opiates.
also drinking VERY heavily for days before is supposed to work not sure if thats an urban legend or not...but getting a gallon jug of corn alchy and going through that in a few days would prolly flush you out pretty damn good...
RECtalItching
"hane-es-anus"