Abstract: A dumping system for pick-up trucks including a slidable member disposed within the bed of the pick-up truck. The slidable member generally includes a sliding vertical dump board positioned essentially perpendicular with respect to the truck bed. The vertical dump board is positioned along the inner edge of the bed in a starting orientation and along the outer edge of the bed in an ending orientation. A stabilizing mechanism is fixed to the ground surface and couplable with the slidable member whereby forward movement of the pick-up truck will allow the slidable member to force the debris out through the tailgate in an open orientation. The stabilizing member may comprise of an inverted L-shaped arm member engagable with the sliding vertical plate and a base member fixed to the ground. Alternatively, the stabilizing member may be a cable fixed to the base member.