Under the Covers (2007)

This is a hardcore sex movie explicitly depicting a number of sexual acts: male and female masturbation (manual and with toys), cunnilingus (hetero and lesbian), fellatio, vaginal fingering, heterosexual vaginal intercourse, and lesbian penetration with a strap-on dildo.

There are two female masturbation scenes.

There are two heterosexual coupling scenes.

There is a scene where a lesbian couple has sex while a nude man looks on and masturbates.

There is a scene involving two M-F couples where most of the time is spent with the couples separately enjoying heterosexual intercourse, but several times the two women have sexual relations.

Every scene in the movie is either a sex scene or a set-up for one. The non-sex scenes are generally much shorter than the sex scenes they set up.

There is a scene in a professional dominatrix's office where multiple people are verbally and physically abused, which is presumably consensual at some level: physical restraint, forced disrobing, yelling, pinching, hair-pulling, striking with objects, etc.

Every external part of the human body is shown at some point in this film.

The film depicts no direct evidence of male ejaculation. It only shows the men appearing to orgasm while still inside the woman.

There is profane language in many of the sex scenes ("fuck me," "oh god," etc.) which sometimes goes so far as so-called dirty talk ("make me cum", etc.)

A character repeatedly calls another a bitch.

During sex, the characters often refer to body parts using crude terms: cock, ass, etc.