A rancher was helping one of his cows give birth, when he noticed his four-year-old son standing at the fence, wide-eyed and soaking in the whole event.
The rancher thought to himself: "Great, now I'm gonna have to start explaining sex. Well, no need to jump the gun. I'll just let him ask the questions and I'll answer as best I can."
After everything was over, the rancher walked over to his son and said, "Well, son, do you have any questions?"
"Just one," gasped the still wide-eyed lad. "How fast was that calf going when he hit the cow?"
