女汉纸男妹纸
[nǚ hàn zhĭ nán mèi zhĭ]
Female 'man' and male 'girl'. It's playful use of language where 'hanzhi (paper)' sounds similar to 'hanzi (guy)', and 'meizi (cute gal)' is twisted to be a counterpart term, emphasizing an unconventional and whimsical view on gender labels. This also indicates a liberal attitude towards gender differences and can be considered humorous in some situations.