'sup?

[William Stone]

In the northwest suburbs of Chicago, 'sup' is very much a Caucasian teen greeting.  African American teens all seem to use a flapped 'whatup' and have for a while.  My 15 year old has certainly been
using it for at least two years.  How long has this variant of 'what's up' been around?  Where did it originate?

Jonathan Lighter wrote:

> I first noticed  /tsup/~/sup/ in NYC about 1970.  When I came to Tennessee in 1974, it was used there as well, almost entirely by young African Americans, as in NY.
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