a way of saying "fuck it, it happened, it's over with, and i can't do anything about it now."
stating the realization that something has happened because it is part of living life whether that something be good or bad.
can be said in a southern accent: "juspartaliife"
Person 2: that sucks, but it's just part of life.
Bubba: is it wrong tuh have a one night stand witta girl you juss met?
Cleatus: wut are yewa queer? fuck no, its juspartaliife.