weaksauce Share definition Flag -Lacking of sophistication or goodness. -Utter idiocy. -Pathetic loser. "And as you can see here, we will lose 10% profits..." "Weaksauce!" "Weaksauce, coming from you?" "...weaksauce..." weaksauce by Dante August 25, 2004 0 0 Get merch Get the weaksauce mug. Buy Now — $32.95 See more merch