Grandpa was showing little Johnny around the farm, and when they come to the corral, he explained,
“That’s a bull and a cow, and he’s serving her.”
A little later on, they saw horses.
Then Grandpa said: “That’s a stud and a mare, and he’s serving her, too.”
That night at supper, after everyone was seated and grace was said. Grandma turned to Grandpa and said: “Will you please serve the turkey?”
Little Johnny jumped up and yelled: “If he does, I’m eating a hamburger!”