他笑我有病我笑她神经
[tā xiào wŏ yŏu bìng wŏ xiào tā shén jīng]
It conveys that people misunderstand him, laugh at his eccentricities or unusual behavior, even think he’s crazy; meanwhile, he responds similarly towards them due to differing viewpoints, showing mutual disdain based on perceived oddities. It could also suggest a sarcastic attitude toward others' ridicule.