Low language, high philosophy, and low budget.
Parents need to know that there is more swearing in this film than at a convention of longshoremen. It's presented in the form of natural conversational rhythm, rather than as epithets. There are no depictions of sex, but it's discussed explicitly. Events and topics of note such as oral sex, masturbation, pornography, a death off screen, hermaphrodism, drinking, drugs, a child purchasing cigarettes, and an inadvertent case of necrophilia, make this film exceedingly inappropriate for kids under 17.