男人要有大姨爹才公平
[nán rén yào yŏu dà yí diē cái gōng píng]
A playful name suggesting that for fairness, men should have an 'elderly aunt' which is often used humorously to point out the challenges in relationships. Here '大姨爹 (elderly aunt)' may be referring to a man needing patience as if dealing with an elder family member. This could also carry other humorous connotations depending on context.