Identify porn scene

Hi guys, I need your help to identify this porn scene that I watched years ago, and that I've looked for everywhere. It was a from a "vintage" movie. A repairman gets into a house where a blond guy stands chatting on the phone with a girl that sits in a sports car driven by another dude. When the blond guy in the kitchen sees the repairman he hangs the phone and start sucking his enormous cock.
Thank you all !