惹我小心让你大姨妈倒流
[rĕ wŏ xiăo xīn ràng nĭ dà yí mā dăo liú]
This can be understood as a very informal and comical phrase that suggests if you provoke me or play a trick on me, then you may experience a health disorder such as menstrual problems or period reversal, although it isn't medically correct.