An elderly couple is out to dinner to celebrate their 50th Anniversary and also having 10 children.
But the old man is agitated and restless. Finally, he asks his elderly wife,
"I hate to say this, but I have always been troubled that our 10th child looks different from all the others. I really need to know, did our 10th child have another father?"
The wife hems and haws and then answers, "Yes."
Although feeling very hurt the elderly husband persists, "I knew it! Tell me the truth, who was the 10th child's father?"
His elderly wife answered, "You."