少年不懂姨妈的痛姑娘不懂蛋疼的疼
[shăo nián bù dŏng yí mā de tòng gū niáng bù dŏng dàn téng de téng]
A humorous play on the phrase, referring to different gender-specific physical discomforts ('aunt flow' pain for women and 'testicle pain' for men) that each cannot comprehend fully from the other's perspective. The name implies a lack of empathy and understanding between the opposite sexes concerning such matters.