There's so much else that's wrong with the film, but to go into further detail would ruin the amusement factor. Just know that if you choose to watch this unintentionally fantastic piece of entertainment that you're in for a treat. The best way to experience it is with a few friends at a cinema with a bunch of other rowdy, like-minded people, but if no cinema near to you shows it, then buy the DVD, invite some friends over, get really drunk, and then watch.
As a film, The Room is a undeniably a failure of unmatched proportions, but as piece of humorous entertainment, it's superb. It's awful but it's a must-watch.