[Oblivion437]

Well, if they demand that you submit to the testing, say that your right to privacy predicates their privelidge of knowing what drugs you've been using. If they say privacy is some sort of irrational rubbish or nonsense, fire this gem at them. It works every time (especially on males)...

"How many times in the last 90 days have you engaged in anal intercourse? What injuries have you incurred from such intercourse? What medical products or devices have you purchased to facilitate the engaging of anal intercourse? How many partners have you engaged in anal intercourse with? What medical treatments have you received for injuries incurred as a result of anal intercourse? Now, now, your right to privacy is rubbish, so answer my questions!"