To Pass Something Off As Acceptable

What does that mean? I'm sittin' here tryin' to figure like if it means like you don't like the use of the word like then is like, like un acceptable? Or if you meet a stranger who has no idea you just spent thirty seven hours in the ED with your daughter who tried to OD and they make a crack about valium, is that un acceptable? And who is the one who does the accepting anyhow? ~~~~~~~~~~~~~~ Enlighten me, please.