A cattle rancher has 1500 cows to inseminate and 2 bulls , an old gray muzzled one and a young one newly come into maturity . Rancher sends em to the barn and after 3 days the oldernone had serviced 400 and the younger one 500. He decided to hire a stuff bull to speed up the process . A truck rolls up and in the back is a bull 7 feet tall at the shoulders with horns wider than the truck .The younger bull starts snorting and stomping the ground . The older one says , you don't want to start with him . The younger replies , " I m not starting anything I just want to make sure he knows I m a bull ".