A large ravine often located near the door or porch of ones house, caused from the owner (or those who dwell within) by frequently pissing off it, due to laziness.
The pisswash outside Jeds shack was three feet wide.

"I gotsta piss, Ima make my pisswash a bit deeper now, homie"
by ForceBreaker January 14, 2015
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When you open someone’s dishwasher and relive yourself into it. Doesn’t matter if the dishes are clean or dirty, that dishwasher will never be the same.
Your dishes are DONE man... look for them in the Pisswasher.
by Dick Walski March 7, 2021
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