The Pirate Movie
http://www.imdb.com/title/tt0084504/
I dated a girl in High School that was obsessed with this horrible....horrible movie. She would watch it at least once a week, and I would have to sit through it, if I wanted any shot at getting some action.
It taught me one thing though, that I can seriously contemplate suicide. The only thing that stopped me, was the 4 minutes of action I would possibly get after the viewing of the film.