As expected, everyone eligible goes buck wild to take advantage of those sweet 12 hours when premarital sex is allowed. What about gay sex? Throughout the film, there's humor both crass and wholesome, and the theater crowd seemed to have a great time. Let's be real: If straight premarital sex is banned, gay sex would be, too. But in the movie, gay sex is a brief joke one minute, and several gay couples are shown complying the next.