Why do gross questions get answered on WikiAnswers?

Well, if the gross questions are within the site's terms of use, then we answer them because someone asked them and wants an answer.

If they are so incredibly gross that they are outside our terms of use, they get answered (and asked) because some people enjoy vandalism and inappropriate topics. In that last case, I would encourage you to click the little red "Report Abuse" link that is above the question at the top right. We don't want gross things on our site either, and we'll be happy to review those things and get rid of the ones that violate our terms of use.