Individual who passes out drunk at The Texas Renaissance Festival with their shoes on. In that case, once he/she is found, they are covered with trash and glitter then left to awaken alone and wondering what the fuck happened. Generally the act is videotaped, and photographed for future enjoyment by all who were involved, much to the dismay of said "Dirt Fairy". So let this be a warning to all, do not fall alseep/pass out with your shoes on!
A search on dirt fairy in a popular social networking site, will show you pictures and videos of said, dirt fairy.