Admittedly there are probably hundreds of examples of terrible scriptwriting in the history of cinema. I have narrowed it down in my usual style to an Olympic podium of medals for bad writing. There may need to be a Volume 2. I welcome comments on other films where the writing stinks up the screen!
BRONZE medal: Howling III (1987)
SILVER medal: Ryan O’Neal in Norman Mailer’s Tough Guys Don’t Dance (1987) Perhaps the most melodramatic reading of lines ever. “Oh God, oh man, oh God, oh man!”
GOLD medal: Mortal Kombat: Annihilation (1997)
Kitana: Mother! You’re alive!
Sindel: Too bad *you*… will DIE!
Honourable Mention: Troll 2 (1990)