穿到裤衩的超人蛋会疼
[chuān dào kù chà de chāo rén dàn huì téng]
This nickname is a humorous and playful phrase that implies even superheroes (in this case, someone wearing only underpants) might feel physical discomfort. It can be translated as 'A Superhero Wearing Underpants Might Suffer Pain'. The term is used in casual online settings.