My main objection boils down to this: if the filmmakers set up an anything-goes policy of outraging all notions of human dignity, they're obligated to live up to it without respecting age, race, creed, class, nationality -- or gender.
As the idea is no longer fresh and the plot has basically the same structure, it doesn't quite match the original. But the sequel delivers enough new developments to keep it interesting.
Harold & Kumar Escape from Guantánamo Bay, a loosely strung-together collection of sex, race, and stoner jokes, is, by any rational standard, a terrible movie, yet I kept laughing at it, and I came out of the theatre in a good mood.
