I said the n word on a club penguin server
Why would you say that while playing a children's online game?
I plan to also send a sexist joke to women to a public forum known for generating conflict.
Saying the n word is a terrible thing to do. The word has a great deal of negative history and it's extremely hurtful to others. Racial slurs are not appropriate anywhere.
It's not like I'm not black, I'm saying all this to prove a point.
Even if you're black and just trying to prove a point, its not okay to use the n-word online. All that will end up happening is that people will end up feeling insulted and will get upset. If you want to make a point, try doing so in a less inflammatory way so that people will actually listen.