black aspirin
n.— «In the Granada documentary, Mr Johnson was asked about what patients described as the “black aspirin,” beating by staff. He said: “There are occasions when relationships have been less than professional. As far as being able to prove it, that’s a different matter.”» —“Top security patient ‘died after beating’” by David Brindle Guardian (United Kingdom) Mar. 4, 1991. (source: Double-Tongued Dictionary)