我说我百毒不侵你还真信
[wŏ shuō wŏ băi dú bù qīn nĭ hái zhēn xìn]
'I said I'm invulnerable to all poisons, and you actually believed it?' This reflects sarcasm or irony towards some kind of defense mechanism or persona where one claims oneself to be tough enough to handle anything. The second part shows doubt about others believing such bravado easily.