A mother takes her three sons to enroll in school. The teacher asks, "What are your son’s names?"
The mother says: "This boy’s name is Bill, this other boy’s name is Bill, and Bill here is my third son’s name."
The teacher said, "Isn’t it confusing having all three boy’s named the same?"
The mother replied, "Oh no, you see when it’s time for lunch I just holler out the door, Bill! it’s time for lunch, and they all come a runnin. When it’s time for dinner I just holler out the door, Bill! it’s time for dinner and they all come a runnin.
Then the teacher asked so what do you do when you want a specific boy?
The mother said, "Oh, well then I just holler out their last name."