What Time period can be used for an adult, Specially a man, that is in his forties and still behaves like a teenager, shunning responsibilities typical of experienced persons, preferring to enjoy himself? 知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 I feel, perhaps, the OP was asking more details on the "Mammoni" variety. As https://tube.adult-vod.tv/