...I suggest we add "conservatives rapping":
After all, there's nothing wrong with a "knicker" joke among a room of wealthy white Republicans and that one black guy.
UPDATE II: For the sake of comparison, here's your modern conservative movement in two images. First, immediately before (1:49) the "knicker" joke:
Second, here's immediately after (1:57) the "knicker" joke:
That's where this "rapper" is asking that one black guy "What? I can't say 'knickers'?" I'd be indignant too, I suppose, if I wasn't allowed to proudly be the provocative asshole I am.