I got a job offer from the post office and I was just wondering if anyone here knew what the drug screening process was like? It saids in the letter that you get to take it in private but you have to remove "outer clothing" does that just mean like your jacket and stuff or does it mean strip to your underwear? Do you also take the physical there or is that done later? would it be possible to substitute someone elses pee if I wear tighty whities under my boxers?thanks in advance everyone