"What's this?" he asks.

"Cojones, senor," the waiter replies.

"What are cojones?"

"Cojones," the waiter explains, "are the testicles of the bull that lost at the arena this afternoon."

At first, the man is disgusted, but being the adventurous type, he decides to try the local delicacy, and to his amazement, it is quite delicious. In fact, it is so good that he decides to return the next evening and order it again.

The following evening the waiter brings out the plate but this time the meaty objects are much smaller.

"What's this?" the man asks the waiter.

"Cojones, senor," the waiter replies.

"No, no," the man objects. "I had cojones yesterday and they were much bigger than these."

"Senor," the waiter explains, "the bull does not lose every time."