A man and wife are in the livestock section at the county fair.

They happen upon a stall, where there is a large bull.

Upon reading the sign posted by the stall, the wife exclaims:
"Look here dear! It says this bull mated 365 times last year! That's once per day! I think you need to take some lessons from this bull."

To which her husband replied: "Go ask the farmer if all 365 times were with the same cow."