Abstract: Disclosed is a flexible waste hose support device configured including at least two trough-like members for accepting a flexible waste hose. A first trough-like member accepts a second trough-like member in a telescoping friction fit by means of dual tracks running along the top edges of the first trough-like member. The flexible waste hose support can therefore be adjusted to the appropriate distance between a recreational vehicle waste outlet port and a sewage disposal inlet port. The support trough includes at one end a hoop which is adapted to connect one end of the support trough to the underside of the recreational vehicle, and a hooking device at the opposite end to hook to the edge of the inlet port of the sewage disposal tank. A second preferred embodiment includes a third trough-like member for accepting the second trough-like member such that the second trough-like member is slidably engageable with both the first and third trough-like members.