别拿被牲口亲过的嘴说爱我
[bié ná bèi shēng kŏu qīn guò de zuĭ shuō ài wŏ]
'Don’t say you love me with lips that have kissed animals.' It represents strong emotions, possibly distrust or disdain towards superficial or insincere professions of love, emphasizing purity in relationships.