Die Abenteuer des Sex Diplomaten (1978)

Guy with gray hair, a mustache, and glasses — looks like a professor who strayed from campus — meets two young white blondes in what seems like a dimly lit bar. They start sucking him right there, one after the other, switching off like they’re taking turns on a shift. The blowjob goes from the booth to a bathroom, where he leans against the sink while one girl deepthroats him, her red nails gripping his legs. Later, they move to a living room couch, both girls working him over at once — one giving head, the other rubbing her pussy, spreading wide in close-up. Camera stays tight during oral, really focuses on the lip action and slurping sounds. One blonde jacks herself off on camera, slow and lazy, while things wrap up with cumshot shots on faces and tits.