Fish is trying to stop saying 'huh?' so often, because he feels it makes him sound dopey, and so instead of that one brilliant syllable there occurs an awkward pause as his brain catches up.

"...Oh, uh, yeah. I mean, no. The light bugs me a little." This one in particular, he means, gesturing at an external fixture, the bulb inside its little glass and iron house. It's not very bright, honestly. "I usually switch it off before I come out, but last time I forgot to turn it back on, so..."