jerk·wa·ter 
(jûrkwô′tər, -wŏt′ər)
(jûrkwô′tər, -wŏt′ər)adj.
Informal
Informal
1. Remote, small, and insignificant: a jerkwater town.
2. Contemptibly trivial: jerkwater notions.
[From jerkwater, a branch-line train, so called because its small boiler had to be refilled often, requiring train crews to "jerk" or draw water from streams.]