Caligula is widely considered to be one of the most obscene films ever made. There are sex scenes that show close-ups of oral sex on males and females, showing graphically the genitals of both sexes. No child should ever watch it, and several adults will have trouble with it. The film's sexual content is considered pornographic in nature, with several hardcore inserts intended to sexually arouse, but really turn out to be quite disturbing (this is in the unrated version, though).
Glorified incest, sadomasochism, oral sex (one scene with ejaculation), graphic intercourse (all unrated although some moderate sex).
Almost every type of sexual behavior is depicted in this film, whether the subject of a scene or merely in the background. Full frontal male and female nudity is seen throughout, and there are several orgies that contain graphic sex (besides the full frontal nudity, most of the content is unrated).
A man and woman frolic in the woods (they are sister and brother), they wear short togas showing legs, buttocks, and the woman's breast. The man sucks her breast (unrated to a degree).
Throughout the film, many breasts, buttocks, male and female genitalia are seen (the R-rated version shows male genitals, but all scenes of female genitals have been removed).
Nude laborers are shown working on a roadway.
A man in a robe swims with a group of nude young men and women, full frontal nudity.
Two men walk through an orgy scene talking; background figures are shown nude, genitals visible, having sex, freakish figures are depicted (edited in R-rated).
Nude cleaners are shown scrubbing the floor.
Three nude men covered in mud are standing and talking.
A man kisses a woman and fondles her breasts (toned down in R-rated version)
A woman puts her hand on her adult brother's crotch and kisses him.
A man lifts a woman's dress and exposes her buttocks then has sex with her under his robe.
Large phallic and vagina sculptures are displayed.
A woman is disrobed by a man, she is placed on a table and a man has sex with her under his robe, there is blood shown after on his hands and between her legs.
A man struts about in full frontal nudity.
In a jail scene, nude women are fondled.
In a brothel/party/orgy scene, many group sex acts are shown, including male to male oral, female to female oral, penetration, female genitals, many extended close-ups of female to male oral sex including an ejaculation (unrated)
A large group of nude warriors/spear carriers are shown running.
Nude unconscious women are carried through a banquet, pubic areas are centered (female genitals are edited out in R-rated version).
An orgy/banquet shows more nudity, sex, fondling.
Babies suck from phallic bottles.
A woman is seen having sex with a snake in the orgy room at the beginning of the film. The scene is short and involves the woman pushing the snake into her vagina while it squirms.
The R-rated version does not have hardcore sex as listed but nonetheless contains full frontal nudity of both sexes continuously. However, only the male genitals are displayed. All female genital displays have been edited out except for displays of pubic hair.
UNRATED VERSION ONLY:
Male to male oral sex is shown briefly and quite suddenly. The man performing the act speaks and semen is seen in his mouth.
A group of men is shown in closeup masturbating to ejaculation into a bowl; the semen is used as a skin cream on the nude reclining woman. A man dabs some semen onto his head.
Nude and partially clothed women, in thin, see through robes, are shown in a pool, female masturbation, female-female oral sex, fondling.
A combination feast/orgy is shown with male/female nudity and sex.
There are many scenes showing extreme/explicit sex and nudity.
A man is forced to disrobe and kneel on a table, another man appears to insert his fist covered in lard or cream into the other's rectum.
A man and two women kiss and fondle each other, nude, on a bed. Two women are shown in closeup performing oral sex on each other, to an orgasmic coda.
A man kisses and fondles a dead woman's body. He carries/drags her inert nude body around a room.