mad wae it Share definition Flag Scottish slang for being intoxicated with alcohol, drunk in essence.Often abbreviated to MWi John: I can't wait to get mad wae it at the weekend.Jim: i'm gonna get mad wae it on bucky mad wae it by Fiercedeity94 October 8, 2009 0 0 Get merch Get the mad wae it mug. Buy Now — $32.95 See more merch