'In Fission City it's what they used to call the gang enforcers. See, if someone refused to pay protection, or informed to the police, or just didn't jump fast enough when the local yakuza boss said frog, the standard punishment was to drink contaminated water. The enforcers used to carry it around in shielded flasks, siphoned off low-grade reactor cooling systems. They'd turn up at the offender's house one night and tell him how much he had to drink. His family would be made to watch. If he didn't drink, they'd start cutting his family one by one until he did. You want to know how I know that delightful piece of Earth history trivia?'