Don't piss off people who can curse you. This would seem to be a lesson we, as a society, should have learned back in the medieval times at the latest. This movie was a semi-comeback for Sam Raimi after most people were disappointed in Spider-Man 3. At any rate, critics heralded it as a return to form for his grosser days but he actually had something to say with all the bile, spit and vomit produced by the characters.
On the surface, this is about a girl who denies an old gypsy woman a home loan and gets cursed to be dragged to hell in x number of days. Most of the movie follows the attempts of the girl to escape her fate. However, just beneath the surface, there is a story of struggling against an eating disorder. The main character used to be fat and happy and is now skinny and miserable. The gypsy woman vomits and chews on the girl repeatedly. The subtext is all there if you know where to look.
Anyway, this is a pretty fun little horror romp with the wicked sense of humor Raimi is known for. Check it out.