curbstoning
n.— «There are follow-up visits to housing units where residents did not send in forms or mailed back incomplete ones and field inspections of addresses declared vacant or listed as having only one occupant, a danger signal that a “curbstoning” census worker may not have taken the trouble to look inside.» —“Can Heads Be Counted in a Dynamic City?” by Richard Levine New York Times Sept. 22, 1990. (source: Double-Tongued Dictionary)