Twilight 12 (1994)

Big black guy with a muscular build starts off getting a blowjob from a short-haired blonde in a gym surrounded by weights and exercise machines. She’s on her knees, mouth wide, taking his dick deep while the other guy — a blonde white dude — watches and jerks off. They switch spots and it’s the white guy getting head next, both men standing while she moves between them, looking natural and hungry. Later, one of the white women, a slim brunette in her 20s, rides the black guy in a bedroom with movie posters on the wall — slow grind at first, then bouncing hard, face clear in close-up. Camera stays tight during creampie shots, no cuts, you see everything. Final scene is the black guy fucking a younger black woman doggy style, her ass cheeks flexing, white guy from earlier nowhere in sight — different girl, different energy, rougher pace.