A friend of mine recently returned home from a trip to Spain.
One day he went to a resturaunt down the street from an arena where they have bullfights, the "plaza de toros".
In the menu were bull testicles, so feeling somewhat adventurous he tried them, thought they were a little tough and had little flavor, and another
thing, they were big, almost the size of a pear each !
He ate two and left.
The day before he was leaving, he brought a fellow traveler into the resturaunt, and ordered the same thing.
The waiter came out with a platter on which were the testicles, but they were much smaller this time. Cofused he asked,
"why are these so much smaller, last week the ones I had were twice the size"?
The waiter looked at him and said, " sometimes in the arena the bull wins"