姨妈痛经不痛心
        
            [yí mā tòng jīng bù tòng xīn]
        
        
            A somewhat colloquial and humorous way to say period cramps hurt physically but emotionally she is unbothered. Aunt Flow (姨妈-YiMa) is slang term for menstruation. 'Cramps are painful, but not hurting emotionally'. The speaker seems nonchalant.