Elephantis Bonerus Share definition Flag A rare medical condition of having a huge boner like an elephant for a long period of time. Did you notice my Elephantis Bonerus when I saw your mother yesterday? Elephantis Bonerus by Dr. Elephantis, Dr. Bonerus January 4, 2010 0 0 Get merch Get the Elephantis Bonerus mug. Buy Now — $32.95 See more merch