Admittedly there is a very specific type of black person who would be offended by this - that would be the pseudo-militant, faux-Panther type who has most likely grown up in middle class surburbia. But you're right, I don't know anyone with half a brain who would be offended by this in any way whatsoever. And as I said, it actually does black people a disservice by conflating the very real issue of racism with incredibly trivial musings.
Many white people live their lives looking for opportunities to be offended on behalf of ethnic minorities. I assume they have nothing better to do in their lives.