Mardo Share definition Flag A person who is funny, likable, and just plain nice. Usually sweet and is a jock that is not a jerk. hey, you know that one kid? he's such a mardo! That Mardo kid is amazing! Mardo by Darkie 411 March 18, 2009 0 0 Get merch Get the Mardo mug. Buy Now — $32.95 See more merch