大姨妈来袭
        
            [dà yí mā lái xí]
        
        
            This nickname is often used by girls or women when they are in the menstrual period, 'Da Yi Ma' (Big Aunt) being a colloquial and humorous euphemism for menstruation. The phrase 'Laichi' can mean 'is coming', implying all the inconveniences and discomfort associated with that time.