"I've been watching you and your donkey," he said, "and you are a sorry-looking sight. I don't know who looks more pathetic: you or your donkey!"
Nasruddin did not reply.
"I'm talking to you!" shouted the rich man. "Don't you have anything to say?"
"Excuse me," said Nasruddin apologetically. "I was just so surprised that I didn't know what to say."
"What do you mean you were surprised?"
Nasruddin smiled. "I've never actually seen a donkey riding a horse before!"
Inspired by: The Best Anecdotes of Nasreddin Hoca by Kemal Yorenc
Notes: This story is on p. 78 of the book.