pishbish Share definition Flag term used to describe someone who frustrates you by talking about pissing all the time "dam i really need a piss" "wtf why you telling me all the time you need a piss,you pishbish" pishbish by tookey May 4, 2006 0 0 Get merch Get the pishbish mug. Buy Now — $32.95 See more merch