Back in 1998, a guy from outside Minneapolis, Minnesota went to the mall to sit on Santa's lap (he didn't want to, but he had a 3 year old sister, and he was being brotherly).
So he did, they took a photo, and that was that.
Fast forward to 2012....he's 27 and just got married this past September. He and his new wife and his parents were going through some old photos, and found the old Santa photo. That's when they realized.....the mall Santa whose lap Chris sat on was his new wife's Dad - his FUTURE father in law.
Read the story here. Pic below.