Good one!

Young Bill was courting Mabel, who lived on an adjoining farm out west in cattle country. One evening, as they were sitting on Bill's porch watching the sun go down over the hills, Bill spied his prize bull fucking one of his cows. He sighed in contentment at this idyllic rural scene and figured the omens were right for him to put the hard word on Mabel. He leaned in close and whispered in her ear, "Mabel, I'd sure like to be doing what that bull is doing." "Well then, why don't you? "Mabel whispered back. "It is YOUR cow."