What the hell was that Stacey Dash bit?

I honestly have no idea. Chris Rock is clearly trolling but this.... this fell so, so flat. 

Dash has spoken out about banning Black History Month before, so bringing her out is a clever joke—but I can’t figure out at all why Dash would agree to do it. (I’m sort of glad that she did, even though I can’t remember a bit bombing so far ever.) 

Update: Stacey Dash explains, sort of.