Hornia Share definition Flag When your dick gets so hard it feels like it is about to break through the skin. It's a combination of two words, Hernia and Horny. Jay was so attracted to Eve that he got a Hornia every time she was around. Hornia by Jaythecrazyandwackyguy November 9, 2009 0 0 Get merch Get the Hornia mug. Buy Now — $32.95 See more merch