From the recently closed Toontown’s FAQ:
My friend taught me a new obscenity. I used it for my toon’s name and your filter let it through! Now my toon is wandering around where everyone can see his vulgar name. Ha ha! I dont really have a question.
One of the real pleasures of creating an online game is having to divert effort away from developing new games, gags, and activities, enhancing the graphics and fixing problems so parents can play with their kids because someone came up with a new way to spell part of the human anatomy.