This is a very common term for an appointment with someone on staff, often administration or medical. Someone may say that they have a lay-in for their hormone injection every two weeks. The term can also refer to a small piece of paper called a Lay-in Pass that has the time, date, name, location, and other pertinent information about the appointment. We also see the term used to refer to a guard coming to escort them to the appointment. Someone might say they were supposed to talk to Safe Prisons, but they were “never laid in.” An alternate term for a guard escorting them is “pulled out,” as in being pulled out for a lay-in.
