Little Johnny's father was helping one of his cows give birth, when he noticed Little Johnny standing wide-eyed at the fence, soaking in the whole event. He thought, "Great...he's 4 and I'm gonna have to start explaining the birds and bees. No need to jump the gun - I'll just let him ask, and I'll answer."

After everything was over, he walked over to Little Johnny and said, "Well son, do you have any questions?"

"Just one." gasped the still wide-eyed Little Johnny. "How fast was that calf going when he hit that cow?"