3 sticks butter (real, not just bread lube).
12 oz can of evaporated milk.
Boil these until it hits 234°F or thereabouts.
Promptly realize that you have not yet broken the Trader Joe's 70% pound plus bar (what's left of it after the schadenfreude pie) into pieces. Panic, do so, stir vigorously until the stove is spattered but the chocolate is really and truly dissolved and melted.
Notice that the fudge is starting to fudge.
Stir in two jars of marshmallow fluff, even if they have been sitting around for a few months and have started to separate.
Stir until almost completely mixed, but not entirely, as it still retains pretty swirlies.
Leave a few minutes. The fudge will have started to become fudgey and stiff. Use tip of spoon to press a pencil design into the middle of the swirl.
Leave covered at room temperature overnight.
Share with Abuse team. Devour.