买内内的咸蛋超人
[măi nèi nèi de xián dàn chāo rén]
In Chinese internet slang, this name combines underwear 'nainai' with superman, suggesting someone might be wearing special or unusual undergarments and playfully comparing them to a hero like 'Superman'. It is usually a funny way to describe oneself or refer humorously to superhero characteristics mixed with daily life elements.