我是个疯子疯子只爱你你是个傻子傻子好懂事
[wŏ shì gè fēng zi fēng zi zhĭ ài nĭ nĭ shì gè shă zi shă zi hăo dŏng shì]
An unconventional way to express devotion despite flaws. It describes a scenario where 'being crazy' stands for being head over heels in love and 'being foolishly knowing better' means acting mature while acknowledging the craziness of the situation.