A city feller who didn't know the front end of a goat from a magnolia bush was watching his weekend host's daughter milking her cow when a farm hand hollered, "Watch out, here comes the bull!"
The city feller vaulted a fence for safety, but noted to his surprise that the girl never budged from her stool. Furthermore, the bull stopped abruptly, snorted almost apologetically and meekly retreated to his
enclosure.
"Weren't you petrified?" demanded the guest. "Not me," said the milkmaid, "but I reckon the bull was. This here cow's his mother-in-law."