I got one for Christmas and only just started using it for the same reason. My one is a NextBase and you can link it to your phone and very easily save the clips, not sure if others work similar to this?
It's amazing how many of those people that send in to those Youtube compilations that are actually in the wrong!!
It really does go to show people don't know the rules of the road
To the original poster, i wouldn't worry, if you do end up on Youtube you'll have a laugh showing your friends and family how much of a boob he is.