A little while ago Google allowed some method of control over the sitelinks
that are associated with a sites' Google snippet listing. Through the Sitelinks
feature of Google Webmaster tools, webmasters are able to decide which
sitelinks appear with their listing. However, I don't think this feature has
been picked up by the guys over at the Urban Dictionary, as the snippet below
shows:
I can only imagine that the Goog has decided that this "c word" page is
valuable to it's searchers and have thoughtfully provided a link
directly
to it, or perhaps the UD have intentially provided a link to one of
their most important pages afterall.