Some sexual references.
A couple is having sex. You can see the girls breasts, butt and bush. The viewer cannot see her actual genitalia though. Her body is positioned in such a way that her pubic hair is visible, but none of her actual genitalia can be seen (no labia, vulva, anus, etc) The man is completely naked, however, his full genitalia CAN be seen. His pubic hair, SEMI-ERECT PENIS and testicles can be seen for a few seconds.
A man is kissing a girl's breast.
You can see a girl's bush several times during the movie.
A man is jerking off, you can see his penis for just a couple of seconds. He tries to have sex with his girlfriend but he can't get it up.
A man is taking out his penis, and pees on his girlfriend's face.