The images we see or hear described in the movie are vaguely countercultural (a Santa-with-an-erection cartoon), not sick ( Hustler 's real-life jokes about Betty Ford's mastectomy); they are soft-core (centerfold-style nudes), not hard-core (the pictorial of a woman gagged and bound on the top of a car).
A Santa with an erection cartoon is countercultural, and a centerfold style nude is soft core.