According doctors our tongue can say much and more about our health. Normally, tongue should have a little bit of saliva on it and look pinkish-red. If this is not the case, then something is wrong. Health problems detected by the state of our tongue can vary from dehydration to even cancer.
Miley is well known for her habit to stick her tongue out as much as she can afford. However, her tongue often shows signs of her health problems. Even Cher advised her not to show her tongue as much when it looks like that. For example this pic of Miley shows that she has been taking antibiotics recently which killed some of the natural bacteria of the mouth letting fungus develop in there.