It's kind of how they work things out. Chris has always tried to step beyond what normal people and comedians would consider acceptable. During OJ, he did a bit that is basically victim blaming Nicole Brown. It's really a cruel and ignorant bit, and probably the hardest I've ever laughed at a stand-up special in my life Christ it's funny, and the fact that it's such a ridiculously offensive point of view that makes everyone feel uncomfortable makes it that much more funny.
https://www.youtube.com/watch?v=wNAfvaJEOF4
Honestly, if this is your 'milkshake duck' moment with him, you probably haven't been paying attention to his career much. He has another famous bit that's so dangerous that I don't think it's entirely safe to even describe it on this forum, and it was 20 years ago.