I C! you have PHD in literature!
the most useless degree on earth.
fortunately i don't have it,and i don't need to have it. oh yeah~
i have heard native english speakers say "which side are you with" all the time.
oh, just for your information, they are not truck drivers or street vendors or carpenters or fishers or bricklayers or dockworkers.....
i know there shouldn't be so many or, but i use them anyway just to qi4 S ni3 :D