大姨妈说我今天有血光之灾
[dà yí mā shuō wŏ jīn tiān yŏu xuè guāng zhī zāi]
In Chinese internet slang, 'Aunt Flo says I will have misfortune today.' 'Aunt Flo' is a colloquial reference to one's menstrual cycle. Here it reflects an unlucky day or a bad premonition.