Switch Hitters 1 (1986)

A small blonde girl with short hair is on her knees in a dim bedroom, deepthroating a thick cock while the guy grips the headboard. Her cheeks hollow out on every downstroke — she’s taking it hard and deep, sloppy with spit. Cut to a shower scene where a muscular white guy with blond hair is on his knees, sucking another dude’s dick under running water. The camera stays wide, showing every thrust and gag. Back in the bedroom, the same blonde is now on her back as the guy jerks off over her face, eventually blowing a load on her mouth and tits. The whole thing’s a straight-up no-nonsense oral fest with clean lighting and up-close shots when it counts.