Special ^spanish bulls ball^ meal at a restaurant ,

An american guy visits spain , of course he visits also bull and matador figth at the arena . Sadly the bull looses and the show is over . He feels hungry and finds the best restaurant around the arena , he enters and asks the waiter the special meal of the cook, waiter brings 2 big cooked balls !
He was suprised and asked why it is special
Waiter ; dear sir after the bull figth at our famous arena we cook the balls of the loosing bull,
The man eats and loves the taste ,
Next day again visits the restaurant asks the special of the cook again.
Waiter brings 2 small cooked balls this time .
The man was eats them and when the waiter collects the dishes he says : today the arena show must be quite easy heh , the bull is quite small .
The waiter ; sir not every day the bull loses.