Sex Roulette (1978)

A slim, balding white dude in his 50s gets sucked by a blonde milf with small tits and a tight mouth. She goes deep on his dick, throat fucking with her head bobbing fast, drool sliding down his shaft. They move to the bedroom where she rides him face-to-face, grinding slow before switching to doggy — he pulls her hair while slamming into her from behind. Another guy, younger with a shaved head and darker skin, waits his turn then climbs on the bed and starts fucking her hard in missionary while the first guy jerks off watching. The camera stays tight during the blowjob scenes, giving clear shots of her lips stretched and the cock pistoning in and out. When the second guy enters her from behind, she’s propped on her knees, ass in the air, taking long strokes while the first guy rubs his cock beside her face.