A tourist in Spain stops at a restaurant in a small town. The proprietor offers him the special of the day. The man remarks he enjoys how sweet and tender the meat is and asks what cut of the cow it is. The waiter tells him there was a bullfight at the next town over and it is the testicles of the bull that lost.
A year later, the man is in the same town and visits the same restaurant and asks for the special of the day. The waiter brings out a considerably smaller portion of the special. The man asks why it is so small. The waiter tells him sometimes the bull wins.