Used in a situation where you haven't done anything cool or unique, and your day was as boring as ever; but it also can be used in awesome situations,
like when your buddy Person 1 sees you
parachuting off of the 2nd floor.
TL;DR: Synonymous with "same shit, different day".
Person 1: So,
how was your day?
Person 2:
Just another day at the office.
Sam: Jesus, they worked you over good. You
all right?
Nathan: Just another day at the office.
