I saw that on Columbo tonite. He was at the vets and his dog was snoring and he didn't know what that sound was. It was the one where laurence harvey, the earwig guy, plays a deaf chess whiz and throws another guy down a garbage chute. Which shuts off but he doesn't hear it cuz he's deaf. Very confusing. This is why I can watch these things over and over. I don't get hints.