A man walks into a restaurant in Spain...

He is seated by the waiter who offers him the special of the day, "Meatballs".
He orders the meatballs and waits for his meal to be served, whilst waiting he sees another man receive a plate with two HUGE meatballs, leaving him rather disappointed when his plate of regular sized meatballs arrives.

After his meal the waiter asks if he enjoyed his meal. He replys "Yes, but why did that man have much larger meatballs than myself?"
"Oh yes," the waiter says " he ordered a very special dish available only once a week, bulls testicles. Fresh from the bullfighting earlier today."
"Wow, we'll I'm only in the country for another week, am I able to reserve next weeks?" he asks, to which the waiter confirms.

A week later the man arrives as arranged to enjoy his bulls testicles. When the plate arrives he notices again that they are smaller than he remembered but does not complain as he doesn't want to cause offence. Once he has finished the meal the waiter asks if everything was ok and the man mentions that again they weren't as large as lasts weeks and the waiter replies, "well, sir, sometimes the bull wins."