Murder on the Emerald Seas (1973)

Starts with this slim brunette MILF in a white blouse teasing the hell out of two guys in suits. She’s got that shoulder-length wavy hair and a body that doesn’t quit—tits aren’t huge but they bounce nice when she’s riding. First, she drops to her knees and takes turns sucking both dudes off, deep throating one while the other jerks off behind her. Camera gets right in there for the sloppy blowjob shots, spit everywhere. Then it’s doggy time—she arches her back perfect, ass up, taking it hard while one guy pounds her from behind and the other feeds her his cock. The lighting’s warm, so you see every detail, from the sweat on their skin to the way her tits swing with each thrust. Ends with a facial, but not some weak-ass cumshot—this dude unloads a thick rope right across her lips and chin, and she just licks it up like it’s nothing. No weird plot, just straight-up fucking with good angles and even better energy.