keister
v.— «The inmates know officials are looking for the phones and are going to great lengths to hide them, he said. It’s tough, officials admit, because some of the phones are small enough to be, in prison parlance, “keistered.”» —“McNeil Island prison searched for illegal phones” by Ian Demsky in McNeill Island Seattle Times (Washington) Nov. 10, 2008. (source: Double-Tongued Dictionary)
Further reading
What kind of book do people ask for most often in prison? Romance novels? No. The Bible? No. The most requested books by far are … dictionaries! A number of volunteer organizations gather and distribute used dictionaries to help inmates with...
Katie in Kalamazoo, Michigan, wonders about the expression throw the book at, meaning to “try every means possible.” Did it originally involve literally throwing books? It’s just a metaphor in which the book refers to “the criminal code.” In the...