A man was helping one of his cows give birth, when he noticed his 4-year-old son standing wide-eyed at the fence, soaking in the whole event. The man 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, the man 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 that cow?"