Amber Lynn’s Personal Best (1986)

The scene opens with two women in what looks like a dressing room — one blonde, curvy with big tits, the other a smaller brunette with tight curls. They’re standing close, talking, laughing, then suddenly the brunette drops to her knees and starts giving the blonde a sloppy blowjob right there. Cut to the bedroom — same two, now topless, eating each other out on the bed, lots of close-ups on fingers going in, faces pressed in. Then a black guy walks in, already hard, and starts eating the brunette out while the blonde jerks him off. They switch — he’s fucking the blonde in doggy, pounding her hard while the brunette rides his face. Later, the brunette takes him deep in a kneeling blowjob, throat full, drool everywhere. Camera stays wide most of the time, you see full bodies, natural movement, no fake shit. Lighting’s dim but clear, good focus on the actions without cuts mid-penetration.