Some sexual references.
A couple is having sex. You can see the girls breasts, butt and bush; genitalia briefly visible. The man is completely nude, genitalia visible, partial erection.
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.