Boioioing Share definition Flag The comical sound effect a man makes when he gets an erection. Pronounced: "boy-yoi-yoing" "Damn man! As soon as I walked into that strip joint, I went boioioing!" Boioioing by Irving1992 April 14, 2009 0 0 Get merch Get the Boioioing mug. Buy Now — $32.95 See more merch