Excla-oner Share definition Flag When somebody lets go of shift while they are making exclamation marks and ends up with ones. "Hot girls FTW!!!!!!!!!!!!!!11"....."That guy is an excla-oner." Excla-oner by acidhawk April 8, 2010 0 0 Get merch Get the Excla-oner mug. Buy Now — $32.95 See more merch