之所以猖狂因为此时年少
[zhī suŏ yĭ chāng kuáng yīn wéi cĭ shí nián shăo]
It conveys the sense of being carefree because one's still young. Young people are sometimes seen as more impulsive, braver or more rebellious, since they don't bear too much responsibility compared to their older counterparts. Thus, someone might adopt this name in expression of their youthfulness.