This one is a common problem every drunk person understands, the slack-jawed incidents happen when inhibitions are completely lowered. Powered by confidence juice, you say exactly what is on your mind, be it your eternal love for the barmaid you were scared to say 'boo' to five pints ago, or in Mel Gibson's case, an exposition of your hatred for an entire race of people. That's got to have cause for a sore head. Or maybe Mel's biggest regret was when he talked about the Mother of his love child and was recorded stating she looked like a pig in heat, and probably deserved to be sexually assaulted. Nice. As an inevitable consequence of drinking, drunk people lose all restraint and tend to say the most inappropriate things conceivable, as if completely betrayed by their own brains, and the next day regrets are sure to be titanic. It is not only one of the most infamous problems here, it's also one of the least likely to ever stop happening. Chances are, someone somewhere has just sipped their tenth beer, and is about to ring a soon-to-be estranged friend or family member to impart some alcoholic wisdom.