"DAD!" he shouted. "What are you doing?"
"It is ok," his father replied. "Your mother wants a baby that is all."
The small boy, excited at the prospect of a new baby brother, was pleased and went back to bed with a smile on his face.
Several weeks later, the little boy was walking past the bathroom and was shocked to discover his mother giving oral gratification to his father.
"DAD!" he shouted. "What are you doing now?"
"Son, there has been a change of plan," his father replied. "Your mother did want a baby, but now she wants a BMW."