Of course it's an old time saying and such, but these days, at least in SD, it's stalker language. For "this is what it will always be like" &"you can't do anything about it" and a way for them to justify their actions by just saying "that's just life!" Like they don't have a choice but to stalk people. Anyway, I dont know if its universal but maybe it can help.
"it is what it is"
"no, it most definitely is not"