A man takes his wife to the cattle show. They start heading down
the alley that had the bulls. They come up to the first bull and his
sign stated: "This bull mated 50 times last year."

The wife elbows her husband and says, "He mated 50 times in a year,
you could learn from him."

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's over five times a month. You can learn from this
one also."

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's ONCE A DAY! You could really learn from this one."

The man turns to his wife and says, "Go up and ask if it was 365
times with the same cow."