Open bars at weddings can be expensive for the bride and groom -- and they can also lead to completely out-of-control guest behavior.
Take for instance the guests at former Newcastle United star Danny Guthrie's wedding who, earlier this week, got sloshed and ended up punching the bride. Future guests take note: this is the least appropriate way to say congratulations.
Those guests weren't the first to get crazy at a wedding (and, sadly, they won't be the last). Click through the slideshow below to read five stories of drunken wedding guest antics, then share your own horror stories in the comments.