The meaning of "shit happens" is:
The definition of "shit happens" is:
(idiom) bad things sometime happen for no particular reason
A: I lost my job, someone stole my car and my husband divorced me.
B: Shit happens. That sucks.
I missed the bus yesterday, and was late for work. That was my fifth time being late, so I got fired. Then I couldn’t pay my rent, so now I live with my parents again. Shit happens, I guess.
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