Muacks Share definition Flag Spanish; onomatopoeic for a kiss (Muack) or Kisses (Muacks). Thanks for cleaning my Nulldevice! Muacks!Muack! Muack! I loye you! Muacks by ulph0 February 12, 2010 0 0 Get merch Get the Muacks mug. Buy Now — $32.95 See more merch