What is your worst project you have worked on ?

Ans) my self, I have worked on CMS project called as Ellis pathway, which is my ever worst project I have worked on. It was developed on the language called omnimark, have you by any chance heard about it ?. Moreover it was used to process XML and the worst nightmare would when XML is 500mb and it is not valid after process. I have spent shit lot of hours fixing XML manually.. I literally fucked my self there. Thank God I somehow managed to quit and move on.