A man takes his wife to the livestock show. They start heading down the alley that houses all the bulls.
The sign on the first bull's stall states: "This bull mated 50 times last year."
The wife turns to her husband and says, "He mated 50 times in a year, isn't that nice!."

They proceed to the next bull and his sign stated: "This bull mated 65 times last year."
The wife turns to her husband and says, "This one mated 65 times last year. That is over 5 times a month. You could learn from this one!"

They proceeded to the last bull and his sign said: "This bull mated 365 times last year."
The wife's mouth drops open and says, "WOW! He mated 365 times last year. That is ONCE A DAY!!! You could REALLY learn from this one."

The fed up man turns to his wife and says, "Go up and ask if he had to f*ck the same cow every day."