A waste disposal unit as functional underpants characterized by comprising: a) a solid waste disposal apparatus configured to be attached to the human body by means of a belt comprising belt holes and strap fixation holes and comprising a hinged outer housing lid comprising side flaps and a conduit at the middle of which solid waste pump equipment is located, a connection part connecting the belt and the hinged outer housing lid, a pump housing located into the conduit, a solid waste pump body, and a distance adjusting apparatus, the solid waste pump body engaging by its fixation pins with fixation holes on the distance adjusting apparatus, wherein distance between the pump and the anus is adjustable by tabs on the pump housing, and the distance adjusting apparatus is attached via side protrusions to the tabs on the pump housing by adjusting the distance, b) an urine disposal apparatus for females comprising a protrusion configured to fit with the urinary hole by contacting to the urinary hole in the vagina, an adhesive top flap configured to be attached to the upper portion of the vagina, an adhesive bottom flap configured to be attached to the lower portion of the vagina, adhesive side flaps configured to be attached onto the outer surface of the labia on the both sides of the outer part of the vagina, and an urine outlet pipe, and c) an urine disposal apparatus for males comprising an adhesive area configured to fit with the penis end and secure the urine disposal apparatus for males onto the penis, an urine hole having a centering protrusion configured to be attached into the urine hole of the penis, and an urine outlet pipe. a) a solid waste disposal apparatus configured to be attached to the human body by means of a belt comprising belt holes and strap fixation holes and comprising a hinged outer housing lid comprising side flaps and a conduit at the middle of which solid waste pump equipment is located, a connection part connecting the belt and the hinged outer housing lid, a pump housing located into the conduit, a solid waste pump body, and a distance adjusting apparatus, the solid waste pump body engaging by its fixation pins with fixation holes on the distance adjusting apparatus, wherein distance between the pump and the anus is adjustable by tabs on the pump housing, and the distance adjusting apparatus is attached via side protrusions to the tabs on the pump housing by adjusting the distance, b) an urine disposal apparatus for females comprising a protrusion configured to fit with the urinary hole by contacting to the urinary hole in the vagina, an adhesive top flap configured to be attached to the upper portion of the vagina, an adhesive bottom flap configured to be attached to the lower portion of the vagina, adhesive side flaps configured to be attached onto the outer surface of the labia on the both sides of the outer part of the vagina, and an urine outlet pipe, and c) an urine disposal apparatus for males comprising an adhesive area configured to fit with the penis end and secure the urine disposal apparatus for males onto the penis, an urine hole having a centering protrusion configured to be attached into the urine hole of the penis, and an urine outlet pipe.