[He returns it. Joking about it reminds him what he's supposed to be doing. Taking risks and making life hell for monsters.]

Well, then, I'd have to make them regret using dog ears for evil... or whatever they're doing. Luckily all we have here are ghosts that hunt by sound.

[Which is horrifying and not really something he's dealt with before. None of his tricks really outright help.]

Well, it was nice meeting you and if you need help with monsters look me up. I'm in house three.