Adam in Indianapolis grew up with his grandmother’s warning not to split a pole, meaning that two companions shouldn’t pass on opposite sides of a lamppost, mailbox, or other street obstacle. The idea is that the physical separation hints at an...
steal-me flag n. an upright mailbox flag, which indicates there is mail for pick-up but is also considered a signal to mail thieves. (source: Double-Tongued Dictionary)
snorkel box n. a roadside mailbox with a projecting slot reachable from within an automobile. (source: Double-Tongued Dictionary)