Those who ever get in front of a microphone should be smart enough to stay away from racial stereotyping, even if something is said supposedly in jest.
Whether the person thinks he or she is being funny isn't the point. Race is a serious subject and no matter how lighthearted a remark, it is bound to offend a certain segment of viewers or listeners.

A recent thread here at CCC came to mind as I read this article about some words uttered with the intention to amuse. The lesson we keep learning about such humor is that some don't find it funny.