For all those people who whine this is a typecasting move...
Answer me:
Would it be funny if the skin color was reversed? Let's put this into a fun little perspective:
Roseanne as Queen Latifah's part and Will Smith as Steve Martin's part.
Roseanne: (in I-have-a-cold-but-can't-seem-to-get-rid-of-it voice) I'm off the hizzle fo' shizzle!
Will: What did you just say?
Is that comedy?
HEEEEEEEEEEEELLLLLLLLLLLLL NO!
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"Ow! Damn it, that's the last time you put a knife in me! Y'hear me!"