有些人永远不必等有些人永远不能忘
[yŏu xiē rén yŏng yuăn bù bì dĕng yŏu xiē rén yŏng yuăn bù néng wàng]
Some people never need to be waited for, while some can never be forgotten. This nickname suggests experiences with various people that led to distinct kinds of emotions: indifference toward some, and lingering affection or memory for others.