别以为你是班长就给我得瑟
[bié yĭ wéi nĭ shì bān zhăng jiù jĭ wŏ dé sè]
This name translates to 'Don't show off just because you are the class monitor'. It is a humorous and slightly defiant nickname that conveys a sarcastic tone. The person might be referring to someone who abuses their position of power or feels superior.