Boombalada Share definition Flag A fat unfit child. Usuallay used with fatty to denote a really fat child. (Australian) Look at that fatty boombalada. I reckon he(she) should give up the micky ds. Boombalada by Anonymous December 11, 2002 0 0 Get merch Get the Boombalada mug. Buy Now — $32.95 See more merch