It's crassly funny, but it really doesn't have a whole lot of substance to offer up. At the very least, Tiffany's decision at the climax makes sense, but the general apathy towards the human characters as far as developing them kind of robs the emotional beats of the impact they could have. That being said, Tiffany nomming Katherine Heigl's ear is a pretty worthy scene in hindsight, and the direction is decently fun.
Despite having the hipster humor of the Scream films, Bride of Chucky actually gets right what that Craven series got so wrong: it panders not to the haters of the genre, but the fans. Scream acted like it was a satire of the slasher genre because it wasn't good enough to be a reinvention. Bride of Chucky reimagines Bride of Frankenstein into its old formula, and thus respects its genre by trying something new.
The first three 'Child's Play' movies really were pretty bad, but the character of Chucky transcended to pop-culture icon nonetheless, and this film embraces that in all its absurdity. A relentless self-parody that sends up horror conventions with a wicked sense of humor and a surprisingly solid plot. Destined to be a cult classic in an ironic way the original movies never could.