It is, in fact, a low-budget Belgian film that was simply picked up for distribution by the studio, and, as far as I am concerned, it is much more enjoyable than the majority of Lloyd Kaufman's own B-movie output.
In this delightfully silly and very gory romp, a group of greedy relatives gather together at the mansion of their two elderly aunts, in order to attend their birthday celebrations (and hopefully worm their way into their aunts' wills). However, when the old women open a surprise birthday present (sent by the black sheep of the familya practitioner of the black arts), they become possessed, transform into vicious, drooling, bloodthirsty monsters, and proceed to tear their party guests limb from limb.
If you're a fan of visceral OTT slapstick horrorparticularly Sam Raimi's Evil Dead trilogy (which this film is obviously heavily influenced by) or the early work of Peter Jackson (whose similarly daft Bad Taste came out the same year)then Rabid Grannies should be right up your alley. Director Emmanuel Kervyn spends the first thirty minutes introducing us to his raft of absurdly unlikeable characters (none of whom really deserve to survive 'til the end credits), and the next sixty dismembering them in as many inventive and silly ways as possible. It might not be Oscar winning material, but it's a whole heap of fun!
Considering the limited budget, the juicy effects on display are pretty damn good, and the film sure doesn't hold back with the nastiness: one man has his limbs hacked off, before being impaled (between the legs) on a pike; a fat guy gets stuck trying to escape, and has his ass eaten; and even a little girl gets reduced to spare parts by the demonic old dears!
7.5 out of 10, rounded up to 8 for IMDb.