Last Foxtrot in Burbank (1973)

Starts with a tight brunette with natural tits and a visible tan line getting held from behind by a fit guy — you can see his hands sliding down her sides. Then it cuts to a couch scene where she’s face down, ass up, while he grinds on her like he’s about to fuck her doggy style. Another girl joins in, and they take turns riding him, tits bouncing in slow motion. The camera gets right in there for close-ups of fingers and tongues working. There’s also a weird but kinda hot part with a 50s dude and a younger guy on the couch — no sex, just him holding a controller while the kid leans in like he’s about to make a move. Lighting’s soft, so you see every detail without that harsh porn glare.