An American, I suppose.
4 seconds sound clip from the Beat the Devil (1953) movie soundboard.
You can hear this line at 00:11:30 in the Blu-ray version of the movie.
Quote context
[...]
- I'll be along. Better toddle.
- They don't like to be kept waiting.
- I'll lay on a car. We'll meet in front of the hotel at 6:00.
- Anyway, I... I quite like him.
- We ought to have got a plane and flown out, as I said from the start.
- Do you remember I said it, O'Horror?
- My name is not O'Horror. It is O'Hara. Do you hear? Mr. O'Hara. Yes, Mr. O'Horror.
[...]