Remember this is not one of my jokes... and unfortunately I don't have a reference to who it has been written by.
A very protective farmer had three daughter whom have grown up and are going out for date for the first time. The over-protective farmer waited with a gun when the guys arrived to pick up the girls. The first guy came and said, "Hi, I'm Joe, I'm here for Flo, we're goin' out for a show, is she ready to go ?" So the father called Flo and send them off. The second guy came and said, "Hi, I'm Larry, I'm here for Betty, we're gonna eat spaghetti, is she ready ?" So the father called Betty and send them off. The thrid guy came and said, "Hi, I'm Chuck......." The father shot him.