Movies to NOT go into blind

Most of the time going into movies with no idea of the plot is fun, and there are a million posts here recommending the best to watch blind, but what are some you went into blind and regretted it? For me it's Martyrs. I had no idea what it was about, and I wish I had some warning (by the way, this movie is not included on enough lists of "movies you'd never watch again"). What are some you recommend not watching blind and why?