A few weeks before Barack Obama was elected president, Mary Beth Buchanan, the U.S. attorney for western Pennsylvania, filed criminal charges against the makers of the Whizzinator, a fake penis used to deliver clean urine for drug tests. The strap-on phallus, which comes in assorted “natural, lifelike skin tones,” is connected by a tube to a hidden bladder containing urine (sold separately) that is untainted by marijuana metabolites. According to its manufacturer, Puck Technology of Signal Hill,...