Not all Black women--or women in general--have this character trait, but I have met some Sistas that not only admit to it, they affirm the fact that they can not be on time--then they laugh about it.
I just don't see the humor in it, nor does it come off as "cute." Furthermore, why would one think it's OK to leave another person hanging? I don't see the pride in such a flaw.
The way I see it, when someone knowingly leaves you hanging on a time schedule, that's like saying "You ain't got nothing better to do than wait for me anyway."
The truth of this issue is that if anyone knowingly chooses to leave you hanging on an agreed time, then they are not respecting your time.
Whether they are aware of it or not, to ignore an agreed time or to chose not to be timely is a slap in the face to the other person.
The least you can do in a situation where you know you're not going to be on time is let the person know when you see it coming. Don't wait to show up at 7:30 to apologize for being late for a 6:30 appointment. That just gives me a whole hour to write a blog about your late ass...