off-paper
adv.— «Hood also pointed to a statement in Schmidt’s notes that “people know Stan Ford is a straight shooter and he turns away people who want to buy off-paper.” Schmitt agreed with Hood’s assertion that “off-paper” is a euphemism for buying a gun illegally.» —“Conflicting accounts in firefighter’s gun case” by Kevin Vaughan Rocky Mountain News (Denver, Colo.) Mar. 16, 2006. (source: Double-Tongued Dictionary)
Further reading
A firefighter named Steve in Newport News, Virginia, wonders why in his line of work, and for some police, certain additional kinds of days off after long unbroken shifts are called Kelly days, Kelly shifts, or Kelly time. The term most likely comes...
Visiting firemen doesn’t necessarily refer to firefighters. The terms visiting fireman and visiting firemen may refer to any of several types of visitors from out of town, including non-firefighting celebrities, tourists, and rowdy conventioneers...