I just got a job as a waitress. I am an underage drinker. About 100lbs. I am going to my friends on Friday (today is Friday) I have no idea when I am going to, but I have to take a drug and alcohol urine test . If I plan on having like a fourloko or some Smirnoff how long do you think it will stay in my system so it won't show up on a test? Are there any things to make it exit system faster? Please help!