When Monika takes off her jeans to have sex with Reagan, the scene abruptly jumps ahead to them kissing after she has only dropped her jeans enough to expose the top of her butt. This is a shout-out to Cerina Vincent's previous movie Cabin Fever, where she only allowed the top of her butt to be filmed during one of the movies sex scenes, even though the director tried very hard to persuade her to show all of it.