"Mechanic-speak" mumbo-jumbo technical jargon used when discussing specs/repairs of vintage roadsters and sports cars. It's such a complicated and seemingly-unintelligible speech-pattern that it might as well be a foreign language to a non-mechanical-knowledgeable listener.
In "Back To The Future, Part 2", Marty protestingly says, "English, Doc!" when said wild-haired scientist is worriedly reciting his babbling Swahealey about how the DeLorean had been mis-used by Biff Tanned to majorly mess up the entire space-time continuum.
by QuacksO February 02, 2020