Hornycorn Share definition Flag adj. horn·i·corns 1. To be desirous of sexual activity and mawkishly sentimental John: I love you hunny bun. Let's make out. Thus, John is a hornycorn. Hornycorn by Psycha June 13, 2004 0 0 Get merch Get the Hornycorn mug. Buy Now — $32.95 See more merch