You live with them
You've been ****** over by them.
"walked a mile in their shoes."
you've watched them poop
u spend a week with them
you view things from there perspective .I think that is important.
You see them in their worst moments (i.e., losing their temper), or until you see how they treat anyone that's misfortunate or can be perceived as weak.
walk in their moccasins or shoes
U dump them