Don't refer to 'A Very Harold & Kumar 3D Christmas' as a stoner movie. At least, don't refer to it as a stoner movie in the presence of Jon Hurwitz and Hayden Schlossberg, the two men who have now written three 'Harold & Kumar' movies (and have recently added an 'American Pie' movie to their resume, too). They find the term offensive. Moviefone spoke to the duo (who made a few references to the fact that they were smoking pot during the interview -- which may or may not have been a joke) about this third 'Harold & Kumar' movie, the backstory on how they convinced Neil Patrick Harris to play a role in which his entire personal life is trivialized as just a way to meet girls through "misdirection," and if they had any problems convincing the entire original cast of 'American Pie' to return for 'American Reunion.' Oh, yeah: also why every Christmas movie should include an exploding bag of cocaine.