a moment on the lips, a lifetime on the hips

Said of food that is very tasty but very fattening. Sometimes used as warning or expression of disapproval. No chocolate cake for me, thanks. A moment on the lips, a lifetime on the hips! Are you sure you should have a second helping of ice cream? You know what they say: a moment on the lips, a lifetime on the hips. Have you tried this crème brûlée? Who cares about "a moment on the lips, a lifetime on the hips" when something tastes this good!