数学不好的女生都是好姑娘英语不好的男生都是纯爷们
[shù xué bù hăo de nǚ shēng dōu shì hăo gū niáng yīng yŭ bù hăo de nán shēng dōu shì chún yé men]
Translates roughly to 'Girls who aren't good at mathematics are good girls and boys who are poor in English are real men.' This can mean the creator is self-mocking or comforting oneself about being weak at studies, and may have positive feelings toward those types of students.