I've never heard a noise like this from a snake...ever...

....it sounds almost like a cat or a dog vomiting....it's loud and sounds like he is coughing.. I'm sure he'll go see the vet, but just want the more experienced keepers to chime in on this and tell me if they've ever experienced what I am right now. None of the snakes I've ever had have had a RI so I'm thinking this could be my first big dilemma...

No other symptoms of an RI are present. He is not stargazing, no bubbling mucus in or around his mouth.

And on another note, for the ~9 months i've had this guy, he's been one of my worst feeders.