Anyone recognize this plot? Looking for CODE

I can only describe what I remember:

Husband and wife have some friends over and they all fall asleep drunk except for one of the friends that keep talking to the wife. We go to the husband's perspective on the couch, eyes closed so we don't see anything, but we hear slurping and sucking in the background. Then we see through slits (his eyes) how they move to the bedroom and we follow them later to spy on them fucking on the bed. The second scenario is a repetition, but they have sex right in front of the husband while he pretends to be passed out on the couch.