Skinned Deep (2004)

The horror film Skinned Deep begins when a family suffers a flat tire on a barren stretch of road with only a diner dotting the landscape They meet Granny the seemingly nice old woman who runs the establishment but they soon find that she is the leader of a deranged clan The family is slain with the exception of their teenage daughter Tina whom one of the sons in the family Brain a boy with an externalized brain much larger than his head takes a romantic interest in Soon a group of bikers show up forcing the girl to figure out which group of crazies she should throw in with in order to stay alive