A friend of mine used to throw a lot of potlucks, and her friend Brian would always come with two different pies. She started calling him the Evil Pie Man because despite everyone's best intentions to not indulge in a lot of pie, his pies were so good that everyone indulged in a lot of pie.
I started bringing cake to her potlucks, and quickly earned the name Evil Cake Lady. It would be funny to show up with my latest cake and see people both excited and terrified at what I had brought. Diets would be ruined, fasts would be broken, promises to exercise more starting tomorrow were made. And the cake would be eaten.
Sweet evil indulgence, indeed.