Usually, the “unrated” label on is merely a marketing tool, but with “Jackass Number Two,” it’s a bona fide red flag. Anyone who saw the MTV series or the first movie knows what to expect: presumably drunken and gleefully stupid stunts and pranks. You either love it or hate it; I, against better judgment, fall into the former. The disc boasts nearly 50 deleted sequences “ any of them would be right at home in the film, if not for all the male genitalia. A making-of documentary shows that long after “Two” wrapped, star Johnny Knoxville still sought to harm himself for our enjoyment. Sad, perhaps, but I can’t look away.