Sue Ann is a loner who keeps to herself in her quiet Ohio town. One day, she is asked by Maggie, a new teenager in town, to buy some booze for her and her friends, and Sue Ann sees the chance to make some unsuspecting, if younger, friends of her own.
This movie contains 2 potentially triggering events.
A dog is heard whimpering and barking and briefly shown with an injured, bleeding paw. It is implied that a woman drew blood from the dog, hence the bleeding.
A teenager is locked in the upstairs portion of a house, is heavily medicated and told she's sick (she isn't), and is verbally abused, all at the hands of her mother.
In a flashback, a teen girl is the butt of a prank of a sexual nature, and everyone laughs at her. Though she's not brutalized, the similarities may be enough to trigger someone.
A brief shot of a naked butt, and a shot of character nude from the front with his hands covering his genitals. Later, a man's penis is briefly visible.
A couple characters wearing spiked collars have briefly visible irriation on their throats, and another character is threatened with having their throat slit, but it doesn't happen.
Depends on how you define excessive but there's enough gore that if you're not a fan of it I would advise you to skip this film. Examples of some of the disturbing gore below (spoilers):
Multiple characters are stabbed/cut and there's a lot of blood. A character presses a hot clothing iron against the abdomen of another character and we see the bleeding burn. A character stitches another character's mouth shut (while she's unconscious) and there's quite a bit of blood. A character is run over by a car and we see her bleeding body.
An adult character flirts with a teen, other teens make jokes referencing the teen and the adult having sex, and the adult later hugs/slow dances with the (drugged) teen and kisses him extensively.