To enjoy a movie like Piranha 3DD (yes that's not a typo, it's indeed an allusion to cup size), one needs to be able to park one's brain at the door and not question the utter pointlessness of this sequel to a (arguably) less pointless remake. Sure, it has its moments - Christopher Lloyd, Ving Rhames and David Hasselhoff all put in memorable turns - but instead of the sharp satire that Piranha 3D was, Piranha 3DD plumbs the depths and goes for the cheap laughs and dirty old man humour.
The film also spends way too much time setting up the story instead of jumping straight into the bloodbath - seriously, who is looking for that much story in a movie like this? The real action takes place in the last 10 minutes of this short 83 minute movie, which means apart from the slapstick comedy and the celebrity cameos, there is a lot of filler in between that will make even the most patient moviegoer feel annoyed.
Piranha 3DD is filmed in 3D and not post-processed, which does make the action sequences more bearable than its predecessor, but so much of the film is so devoid of action the 3D largely becomes moot. Even though most moviegoers may find themselves raring to leave the cinema once the credits roll, do stay through the first part of the credits for some really funny outtakes, most involving Hasselhoff hamming it up for the camera. In more ways than one, the end credits are really the best part of the movie.