There was a Sheep farmer who had four daughters.
One night, he heard a knock at the door and found a young man standing there.
The young man said, "My name is Freddy. I've come to pick up Betty. We're going out for spaghetti. I hope she's ready."
The farmer thought that this was cute, so he let them go out.
Pretty soon there was another knock at the door and another young man was there. He said, "My name is Vance. I've come for Nance. We're going to a dance. Is she ready by chance?" Again, the farmer thought this was cute and let them go.
Soon, another knock on the door with yet another young man standing there. He said, "My name is Moe. I'm here to get Flo. We're going to a show. Is she ready to go?" Again the farmer was amused and let them go.
Once again, there was a knock on the door and a young man was standing there. He began, "My name is Chuck." The farmer shot him.