Cojones

A man travels to Spain and goes to a Madrid restaurant for a late dinner. He orders the house special and he is brought a plate with potatoes, corn, and two large meaty objects.
What's this? he asks.
Cojones, señor, the waiter replies.
What are cojones? the man asks.
Cojones, the waiter explains, are the testicles of the bull who lost at the arena this afternoon.
At first the man is disgusted, but being the adventurous type, he decides to try this local delicacy. To his amazement, it is quite delicious. In fact, it is so good that he decides to come back again the next night and order it again. After dinner the man informed the waiter that these were better than the pair he had the previous afternoon but the portion was much smaller.
Señor, the waiter explains, the bull does not lose every time.