数学太高冷逗比的我不懂
[shù xué tài gāo lĕng dòu bĭ de wŏ bù dŏng]
This phrase translates to something like 'Math is too aloof, I'm too silly to understand it'. This conveys a humorous and casual attitude toward difficulties encountered while studying mathematics, admitting that math seems very serious ('cold and high'), but he or she just can't get it and has no option but to make light of their struggles.