passing random drug tests

I think he should just get clean for a while. Earn your parents respect back. You're so young, do you really want to endure 4 more years of them breathing down your neck? Pick up a new hobby and entertain yourself. The more sneaking arounf you do, the more you'll get caught and get in trouble. If you have parents that are piss testing you at 14, what makes you think they won't comtemplate getting the police involved to teach you a lesson?