The original meaning is that the bone marrow tastes good, and it is delicious after eating, and then I want to try it again. I have experienced it once and want to try it again.

Moral: describe a thief or a man or a woman who cheated on you, meaning that they want to do it again without being caught once; It can also be explained that I did something originally to satisfy a temporary greed or novelty, but I felt very satisfied or excited after doing it, and I want to continue doing it in the future, which may even become a habit or hobby.