穿着红内裤当超人
[chuān zhe hóng nèi kù dāng chāo rén]
Translates directly to 'Be A Superman Wearing Red Underwear.' In pop culture, particularly Western comic books, superheroes like Superman are often depicted with red underwear outside their pants as part of their iconic outfit. This username likely expresses a lighthearted, quirky, and slightly humorous take on aspiring to be extraordinary or having superhero-like qualities in one's daily life, emphasizing the humorous aspect of the classic superhero appearance.