尤物少女薄情少年
[yóu wù shăo nǚ bó qíng shăo nián]
'An Alluring Girl, A Cold-Hearted Young Boy'. It comes from traditional culture which considers extraordinary women who are extraordinarily attractive and bewitching. The second half shows contrast about an apathetic youth. Maybe users believe it fits them or it's merely for showing off their individuality.