“What ho!” I said.
“What ho!” said Motty.
“What ho! What ho!”
“What ho! What ho! What ho!”
After that it seemed rather difficult to go on with the conversation.

P. G. Wodehouse (1881-1975) Anglo-American humorist, playwright and lyricist [Pelham Grenville Wodehouse]

“Jeeves and the Unbidden Guest” (1919)
    (Source)