In 2008 Astronauts on the International Space Station were hard at work repairing the Intergalactic Piss Cleaner. This device was designed to convert urine and sweat into potable water, thereby decreasing the transport loads of the supply rockets. Unfortunately the urine centrifuge was out of whack and the astronauts have been forced to cut down on their water intake.
"The water should be 70% condensation and 30% urine." At present it's 90/10.
Less piss sounds good to me
None sounds even better.