hippy piss Share definition Flag A Southern Californian expression used to describe the smell of patchouli oil, which is als known as "patchouly" or "pachouli." Everyone at the Dead concert smelled like hippy piss. hippy piss by Paul D. Key July 25, 2006 0 0 Get merch Get the hippy piss mug. Buy Now — $32.95 See more merch