MissTerry - that's awful, poor parents of the girl who should have been there and wasn't, what an utter fuckwitted thing for the best man to have said! 
:(
I have a couple of cringeworthy FOTB speeches - one was really sad, he clearly preferred the bride's sister and spent the whole speech comparing the bride unfavourably with her sister. The reception was parsimonious as well - just a couple of rooms at a fancy large house, no actual seating and a very small buffet - little more than just canapés, in fact. No dance or entertainment. He REALLY didn't like her, bastard.
The other one, he had recently split up with the MOTB so there was acrimony on the top table anyway - he didn't refer to that but for some reason decided it would be a good plan to refer to the failed suicide attempt the bride had gone for aged 13, with junior disprin. Just not funny.
Another wedding I went to, the bride went ballistic at one of her drunk guests on the dance floor and basically told her to fuck off and learn to behave - mortifying for all, really.
I expect some people might have thought parts of my own wedding were cringeworthy, but I don't really care and I'm not saying any of them because they would be REALLY outing. People told me they loved it and really enjoyed it, but no doubt there would be a few sitting there cringing. Meh.