This can be a bad thing and can lead to trouble. If you're not in an environment where you can read this without causing trouble for yourself or trauma in others, you should probably click the back button now.
"Draco's Christmas Cuppa" is a Legendary Badfic squickfic in the Harry Potter continuum featuring Draco Malfoy and Harry Potter, with the former being given a coffee enema. Harry then sucks the coffee out and drinks it. Yes. Out. And drinks it. With everything else that has been up there.