Synonym for PEBKAC, e.g. "The user is being an idiot". Tech-support people passing a problem report to someone higher up the food chain (and presumably better equipped to deal with idiots) may ask the user to convey that there seems to be an I-D-ten-T error. Users never twig.
a user clime that the computer refuse to shutdown .... and there is a message box display "do you want to save changes made to untitled document <yes> <no> "