There’s the scene in Annie Hall where Marshall McLuhan says, "I heard what you were saying. You - you know nothing of my work. You mean my whole fallacy is wrong. How you ever got to teach a course in anything is totally amazing. ":
It’s not clear what McLuhan was supposed to say, but this is confused. Apparently he blew his line and Allen didn’t want to do any more takes. Allen had problems getting a decent performance out of him. I guess he was supposed to say something about how the Columbia professor’s view of his work was a fallacy. I can’t reconstruct what the line should have been.