1 definition by Josh Sabourin

A purely liquid and sometimes greasy diarrhea-like excretion. Usually uncontrallably released while farting.
Anonymous Soldier 1: Guys, I need to eat something before we go drinking, or else I'm gunna have to take a hydro dump at the end of the night.
Anonymous Soldier 2: Hurry up and grab that loaf of bread on the counter!
by Josh Sabourin May 20, 2007
Get the Hydro Dump mug.