Sesso in testa (1974)

A slim brunette with long dark hair is sandwiched between two guys in an office setting, both men fully into the action. The scene starts with her on her knees, deepthroating one guy while the other rubs her back — she takes it deep, no gagging, smooth and wet. They move to the desk, then the bed, hitting doggy style and missionary with lots of close-ups on her face and tits. The guy with the moustache lasts a while, fucking her hard from behind while she’s braced against the chair. Office lighting stays natural, cameras linger on cumshot shots and her lips wrapped tight. No gimmicks, just straight-up group sex with decent chemistry and zero awkward pauses.