A couple of drawings shown in quick succession contain references to incest, one of them very explicit.

Some bare breasts, buttocks, and penises are visible in the cartoons.

There is a scene where Robert Crumb poses with several models, one of which exposes her breasts, whereas the other models reveal lots of cleavage.

There is talk of masturbation in one scene, as well as penis growth.

Robert mentions when he hit puberty, he looked foreword to going to bed and fantasizing about being with "Sheena, Queen of the Jungle."

We hear Robert has sex with a lot of other women despite being married to Aline, as she has sex with other men.

Robert mentions he believes Charles is still a virgin.

One of Robert's old girlfriends stomps on his foot in anger.

Robert mentions that once on Christmas, his father stuck him and broke his collarbone.

Charles mentions he was beaten up every day in school.

There is a lot of sexual talk throughout the film, many sexual terms are used throughout the film.

None.