Ever stood watching two people join together in holy union and thought "they are making the biggest mistake of their lives?" Us too.
A recent AskReddit thread asked people for the tell-tale signs where they knew a marriage was doomed at the wedding itself, and came up with some gems in response.
The groom looked drunk and the bride seemed incredibly angry. Then there was this woman walking around during the reception placing bets on when they would divorce. I later found out she was the mother of the groom.