Things I would only be willing to do only if I had gone deaf.

Go out on one of those boats that take you to look at dolphins or whales. Seriously, the human vocalizations on this video of people getting a look at a "super-pod" of dolphins — "a rare dolphin stampede" — are simply horrifying to me. Even if I were deaf, I would resist this activity, because I don't enjoy intruding on animals, but maybe if you paid me, I'd go along. But I'd rather listen to fingernails on a blackboard than hear human adults squeal over the dolphins and shout inane things like "They're coming over to us" and "I can't believe it."