Nagasago Share definition Flag A utterance indicating a state of drunkenness where memories begin to fail forming properly; May also result in the thieving of food items. Chris: Is that your fifth pineapple vodka? Rachel: NAGASAGO Nagasago by x014014 September 20, 2011 0 0 Get merch Get the Nagasago mug. Buy Now — $32.95 See more merch