Stigma....now you are taking my words. CHILL MAN!!!! If all you took was that ONE hit then more then likely you don't have ANY built up....thereforth you are spit spot clean. If you drink that much fluids and the test goes to the lab it will come back WAY diluted (which isn't good with probation). Get up and drink your morning drink as usual. Then about an hour before test drink approx 20oz to push the urge to pee.