What is the worse movie you've ever seen?

I have seen many tasteless movies but I would finger out the harry potter series. it's been gruelling watch for me and left me momentarily without any senses. I know it's kids stuff with all the fantasy formulas and major box office hits, but still I prefer to stay away from it. Thanks

I have seen many many worse movies but the one which i will never forget and i consider it to be a masterpiece of the worst horror movies ever made is Jason X. Such a worse movie i haven't seen in my entire life. Good luck and don't watch this movie ever. Only if you are too bored and you've got nothing else to do!