title_body: Is sipping super-hot coffee bad?
upvoted_answer: Burning your mouth is obviously the biggest risk when drinking piping-hot coffee. Burning your tongue can lead to destroying taste buds and if you burn it badly enough, you could get an infection on that burn. Further, if I remember correctly, drinking very hot liquids often can contribute to higher levels of mouth cancer. 
  
  HERE is some research I found through a quick google.