Pleasure Island (1975)

Blonde in her 20s with short hair goes to town on the guy’s cock first, sucking him off with big, sloppy head bobs. He’s lean, dark-haired, lying back while the other girl — brunette, long hair, curvy with thick thighs — waits her turn on the bed. Once he’s hard, she climbs on and takes him deep in missionary, grinding slow at first then bouncing faster. The lighting’s dim, pinkish, gives it that retro porn vibe, like actual 70s tape but with clear HD close-ups. They switch after a few minutes — brunette goes down on him while the blonde rides reverse cowgirl. Gets messy toward the end, both girls swapping between sucking and riding, guy lasts a solid ten minutes before blowing a load on the blonde’s chest.