The bad news is that you are probably going to get bored with your company today: and few things are less fun than getting stuck in a conversation with someone who just isn't that interesting. But you can avoid being in their company for very long if you skip past pleasantries and forget your good manners for the time being. Sure, you hate to be rude, but sometimes it's better to come off as rude than it is to endure someone going on and on and wasting your time.