There's an old farmer with 3 beautiful daughters.
He is very protective of them and meets every potential suitor at the front door, with a loaded shotgun in his hands.
Sure enough, come Saturday evening there's a knock at the door. The farmer jumps up, throws open the door and points his shotgun at the young man.
The fellow is a little startled, but manages to say "Hi, my name is Joe. I'm here for Flo. I'm here to take her to the show. Is she ready to go?"
The farmer considered him for a moment, then shouts up the stairs "Flo! It's Joe, come to take you to the show. Get ready to go!"
So, Flo and Joe leave for the show.
Before too long, there's another knock at the door. Again, the old farmer gets up and opens the door with his shotgun already aimed at the young man stranding there.
After a minute, the daughter's sweetie begins to speak, "Hello sir. My name is Freddy and I'm here for Betty. We're going for spaghetti. Is she ready?"
The old man lowers his weapon and says loudly "Betty! It's Freddy. You're going for spaghetti, so get ready!"
So, Betty and Freddy go out for spaghetti.
Finally, only the youngest daughter is left in the home. A few minutes pass before there's another knock at the front door. Just as before, the farmer yanks the door open and points his gun at the fellow there.
The happy beau says "Hi, my name is Chuck!"
So the farmer shot him.