(For the sake of making eating oreos sound more adult than it ought) I start by licking the inside. When I feel confident I have done all I can there I proceed to moisten it (with milk, naturally). At this point my fingers seldom escape a slight mess. Now, eating the outside can be a daunting task, but well worth the effort. You see, you have to be quite careful not to get anything stuck in your teeth to avoid future embarrassment. After I am satisfied that the cookie is satisfied (I mean, its lived its purpose if its in my belly) I personally get rid of the milk. Many people may choose to swallow the milk, and I'm not lactose intolerant or anything, I'm just not really a fan of milk. Then I brush my teeth. A precautionary measure against awful breath. Sometimes before brushing I induce vomiting and re-consume the cookie. Some people will eat more than one cookie before the other one is completely out of their life! Not me, I enjoy the same cookie over and over.