愚蠢之极
[yú chŭn zhī jí]
Translated as 'Extremely Stupid', on the surface this appears negative but may be used humorously or sarcastically. In social networks, using seemingly humble names is often an understatement to attract others' sympathy or show humbleness or sarcasm; such self-deprecatory humor can sometimes win people's attention or favor by creating an accessible image.