trucker bomb
n.— «Last year, one highway cleaning crew with the Department of Ecology found 2,600 bottles filled with urine and 18 dirty needles. The so-called “trucker bombs” are on the increase as more truck drivers choose to relieve themselves without stopping at rest areas.» —“Under The Dome” by John DeWeese Olympian (Olympia, Wash.) Apr. 23, 2003. (source: Double-Tongued Dictionary)