Fox Studios marketed the film as a straight-up teen sex comedy for horny boys: "Megan Fox. Hot. Killer." The poster featured Fox in a skimpy cheerleader outfit licking a knife. The audience expected Transformers with gore.
The version on Vegamovies might be a cam-recorded version from a theater (unlikely for a 2009 film) or a poorly encoded rip with missing scenes, out-of-sync audio, or hardcoded foreign subtitles you cannot remove. This ruins the viewing experience of a visually stylized film. Vegamovies Jennifer 39-s Body