back in my gangsta rap days, I'd say it. but, fuck, everybody did.
now, I pretty much can't stand when my white friends say it. I mean, repeating a skit or song lyric-fine, but you just sound trashy if it's legit part of your vocab. jokingly, it can be funny, though.
and I've never had a problem saying it around my black friends. we respected each other and always made racial jokes.