Johnathanius Share definition Flag A name givin to a guy called John, Johnny or Johnathon that says their super dooper motherfucking hot Omg its johnathanius, i would fuck him for the rest of my life if i could Johnathanius by ZimbaZombaZamba February 26, 2010 0 0 Get merch Get the Johnathanius mug. Buy Now — $32.95 See more merch