Speedo Juice Share definition Flag The remaining water in a speedo after you take it off, fun to rinse on people. Lewis: "Hey" Michael: "What?" Lewis: "SPEEDO JUICE!" Michael: "Ahhhhh!!!" Lewis: "Hahahaha!!!" Speedo Juice by Mitchell and Ben August 25, 2005 0 0 Get merch Get the Speedo Juice mug. Buy Now — $32.95 See more merch