别问为什么请问你凭什么
[bié wèn wéi shén me qĭng wèn nĭ píng shén me]
A sarcastic retort to questioning; translates loosely as 'No need to ask why, please enlighten me what qualifies you (to ask).' Used here perhaps to fend off prying questions or unnecessary critiques while expressing disdain or irritation.