You know what works for me many times? I feign some type of stomach condition. You have to be selective, and you can't use this on the same person all the time, but it goes something like this: " Ohhh, those brownies look so good! I'm dying for some, but I've had colon issues all day and I don't think my stomach could handle it." You should see how quickly people back off. They don't want to irritate your colon, you are off the hook, and no one gets hurt. Works like a charm.