There was a coach at my highschool in like 96 or 97 that would give students pot and buy them alcohol in return for their urine. He claimed that he needed it because he was tested on by the military and he needed their "Vitamins".
You're coach was telling the truth. That kind of stuff happens all the time in the military.
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...and so Hurley said: "Get your money, man. Don't be no couch potato hustla."