没那功能的菇凉别乱说靠
[méi nèi gōng néng de gū liáng bié luàn shuō kào]
A casual expression implying that a girl (or someone addressing themselves as such) should not claim capabilities they do not possess, with 'don't just say anything'. This is often used in more colloquial or informal online speech and may be accompanied by dissatisfaction.