A little boy was attending his first wedding. 

After the service, his cousin asked him, "How many women can a man marry?"

"Sixteen," the boy responded.

His cousin was amazed that he knew the answer so quickly. 
"How did you know that?"

"Easy," the little boy said. "All you have to do is add it up, like the
preacher said: 'Four better, four worse, four richer, four poorer.'