The act of buying useless crap in the month of November for no apparent reason other than to waste your hard-earned money, only to realize in December that this dusty, tossed-aside item would make the perfect Christmas gift for a lackluster person at the bottom of your Christmas list.
To Self, sometime in mid-November: "why did i buy this can of Vienna sausages? I don't even like Vienna sausages! Oh well..."
To Self, late December: "Oh Crap! I forgot to buy Uncle Carl a gift! Oh hey, what's this on the shelf - a can of Vienna sausages? I think Uncle Carl likes these...thank god i thought to pre-gift!"