m'laddo Share definition Flag Typically Northern English way of refering to cheeky, cocky boys. Comes from "my lad". "Get stuffed" "OI!!! Less of that cheek m'laddo or you'll gerra clip round the ear 'ole" m'laddo by Jeff24 April 25, 2005 0 0 Get merch Get the m'laddo mug. Buy Now — $32.95 See more merch