The Sounds of Sex (1971)

One of the brunette girls has bangs and thick thighs, tattoos running down her hip, riding the guy slow at first, then picking up pace. She takes a long blowjob with her back arched off the mattress, throat working. The other girl, slimmer with a shorter cut, slides in after and goes straight to licking the first girl’s pussy while the guy fucks her from behind doggy style. Camera stays tight during oral, lights low but clear enough to see juice on skin. They switch — the tattooed girl jerks the guy off, then takes him deep while the other girl rubs her own clit in close-up. Ends with cum on her face, both girls still touching each other like they’re not done.