therein lies the rub Share definition Flag there is the snag, problem, obstacle from Hamlet We could go to the park, but i left my keys in the ice cream factory, therein lies the rub. therein lies the rub by Yoheeenda shanwi June 11, 2006 0 0 Get merch Get the therein lies the rub mug. Buy Now — $32.95 See more merch