Monty Python's Flying Circus1969

Interviewer:
Good evening. Tonight I have with me Mr. Norman St. John Polevaulter who, for the last few years, has been contradicting people. St. John Polevaulter, why do you contradict people?

Norman St. John Polevaulter:
I don't!

Interviewer:
But... You told me that you did.

Norman St. John Polevaulter:
I most certainly did not!

Interviewer:
[comprehending] Oh! I see. I'll start again.

Norman St. John Polevaulter:
No, you won't.

Interviewer:
Shh! I understand you *don't* contradict people.

Norman St. John Polevaulter:
Yes, I do!

Interviewer:
And when *didn't* you start contradicting them?

Norman St. John Polevaulter:
I did! In 1952.

Interviewer:
1952?

Norman St. John Polevaulter:
1947!

Interviewer:
23 years ago.

Norman St. John Polevaulter:
No!