Cross Cultural "Misunderstanding"

For those of you who don't know, I work in (and K attends) what is known as an "urban" school.  It is high risk, high poverty, and almost 100% minority.  My children (except K) attend our local suburban school.  It is about 30% minority, middle class-ish and not high risk.  To be clear- one is not better or worse than the other but there is a bit of a difference between them. 

The other day I pick the kids up at Latchkey and the director stops me to tell me that X  had an "incident" with another child and that, while it was all worked out, he was a little upset by it.

I called X over to hear his story and while he was walking over the director assured me he hadn't done anything wrong.  So I ask
"So what happened today?"

X-"Billy* cut me"

(*name changed to protect the innocent)

Me-"What do you mean he cut you?  Where?  With what?"

The Director-"No, he cut in front of him in line"

Me- "Oh, at my school that means something totally different."