我不美不萌不温柔关你鸟事
[wŏ bù mĕi bù méng bù wēn róu guān nĭ niăo shì]
Roughly translates into English as 'Not being beautiful, adorable, and gentle, none of your damn business!' This expresses anger towards others' comments on one's personality appearance and behavior in a rather vulgar way. 关你鸟事(business?) includes offensive wording commonly seen in netizens expressing irritation.