他是疯子疯疯走天下她是傻子傻傻走天下
[tā shì fēng zi fēng fēng zŏu tiān xià tā shì shă zi shă shă zŏu tiān xià]
Means 'he is the crazy man traveling the world wildly; she is the fool walking around the world foolishly.' This nickname likely portrays two carefree, unconventional people enjoying life without regard for social norms.