原句：
Whoa, man! You just ran through a big pile of dog shit!
啊!你刚跑过...一大堆狗屎!
It happens.
不管它
What, shit?
什么 狗屎?
Sometimes.
有时

讲解：
Shit happens!
没什么大不了

"Shit happens" is a common slang phrase, used as a simple existential observation that life is full of imperfections.
shit happens 是一个常用的俚语，意思就是生活充满着不如意，生活总是不完美，没什么大不了的意思。

The phrase was featured in the movie Forrest Gump'', where a minor character steps on an unspecified object, implied to be dog excrement. When the main character, Forrest, observes, "It happens," it supposedly inspires the minor character to spawn the "shit happens" slogan.
在电影“阿甘正传”中，这个桥段的意思就是说这句话也是因为阿甘踩到狗屎然后说的这句话，显然阿甘是实话实说，但是他的引申含义又成为了流行语，在这部电影中阿甘本来就被赋予了很多黑色幽默。而且这句话被一个小角色作为灵感做成标语大卖，然后汽车后面的shit happens,表示“生活充满不如意”然后被别人吃了屁股，印证了这句话！