A couple was celebrating their 50th wedding anniversry. The husband says. "We have been together for a very long time so I won't be angry. Tell me! Our fourth child doesn't look like the rest of our children. Did he have a different father?" "Since we have been together for such a long time, I confess he did have a different father." confessed the wife. The husband is very sad and angered. But since they have been together for 50 years, he forgives her. Then out of curiosity he asked. "Who is the father of the fourth child?" The women replied. "It's you!"