MikeJago Share definition Flag (1)something of complete coolness. (2)the greatest thing to ever happen inside of one day, or multiple days (3)the most wonderous thing imaginable Greg: "Dude did you see that UFO?!?"Steve: "that was sooo MikeJago" MikeJago by skinnyman9 December 29, 2009 Get the MikeJago mug.