Actually, that’s what the representative in the district adjacent to mine does. Alcee “Buckwheat” Hastings (Idiot, Florida) speaks “white” when addressing the press or a predominantly white audience. Then he speaks like a jive-ass mo-fo when addressing his constituents. I’ve seen it happen. You can also hear it on the phone taps that were used to impeach and convict him as a disgraced federal judge (yet he’s re-elected without serious opposition).
If Reid were a Republican:
“Sen. Reid, we’re not sure what you mean by speaking with a ‘Negro dialect’. Could you give us a sample of what you mean by that?”
“Sen. Reid, do you think using a word like ‘macaca’ has no place coming from a U.S. Senator? And yet ‘Negro dialect’ does? Why is that?”