I learned in therapy to set boundaries. Personal boundaries are guidelines, rules or limits that a person creates to identify for him- or herself what are reasonable, safe and permissible ways for other people to behave around him or her and how he or she will respond when someone steps outside those limits. Here goes.
"You can not look at my private parts or even be present wile I am urinating for this test until you show me a valid law that states you have the legal authority to do so and/or allows you to take any action against me for refusing to submit to this method of observed drug testing."
Boundary set.