Fecal Venti Share definition Flag Term used to decribe someone who requires a large Starbucks coffee to initiate a bowel movement. ;)Dara: "After three days I finally took a dump."Renee: "The Fecal Venti works everytime!" Fecal Venti by Triple Sac March 16, 2011 0 0 Get merch Get the Fecal Venti mug. Buy Now — $32.95 See more merch