Once my Dad answered the phone. On the other side was an uncle or cousin that he hadn't heard from in a long time. They talked a bit about how all the kinfolk was doing. Finally after a fairly long conversation, one of them said something that didn't sound right. So they dug a little deeper into the past in their conversation and figured out they were not related in any way.
Another one is, I bought my Durango the same day another guy bought a dodge pickup. I was getting his stuff in the mail along with mine from the dealer.