蓝莓不美柠檬不萌
[lán méi bù mĕi níng méng bù méng]
This internet username combines the concepts of 'blueberries aren’t beautiful' and 'lemons aren’t cute,' symbolizing that sometimes what we might expect to be appealing or delightful is not always as charming or sweet as one imagines. It's a lighthearted, self-deprecating way for users to say they may not be living up to certain beauty or personality ideals.