Stiff'd (2011)

Even in Shreveport, Louisiana, people are now accepting the fact that zombies roam the streets... Werewolves prey on the unsuspecting... and crossing the wrong granny can lead to a fate worse than death. Eric is down on his luck: he's between jobs, lives on his best friend's couch, and isn't exactly the most responsible guy around. When he runs afoul of one such granny his life takes a drastic turn for the worse.