There is only one very brief blink-and-miss instance of nudity. In this scene, we can see the breasts of a woman. Multiple sex scenes with heavy moaning and thrusting but no actual nudity.

Two sex scenes.

Very straight talks with details about sex.

Some menstrual blood can be seen.

Some references to psilocybin mushrooms.

One scene with smoking a cigarette.

Two people talk about how drunken the parties were.