iron ranger
n.— «Assuming you don’t, just put in an Iron Ranger (locked pipe with envelope slot), some envelopes and a sign saying “Pay $5/overnite or get Denver-Booted.” » —“Re: Some basic questions?” by Pete Dumbleton Usenet: rec.outdoors.rv-travel Oct. 16, 2000. (source: Double-Tongued Dictionary)
Further reading
Books were rare treasures in the Middle Ages, painstakingly copied out by hand. So how to protect them from theft? Scribes sometimes added a curse to the first page of those books that was supposed to keep thieves away — and some were as vicious as...
Why do we refer to “testing or going beyond limits” as pushing the envelope? In aeronautics, to push the envelope means to try to go past the edge of the aircraft’s perceived capability. In the 1980s, the phrase was popularized by Tom Wolfe’s book...