The swearing isn't exactly offensive so much as it's confusing. Freddy peppering his speech with them so liberally in ways a native Yharnamite never thought to try is like losing something in the translation. Hearing about shit being fucked and asses being bad freezes Micolash's smile in the strained confused expression of someone not fully understanding what's being said but wants to remain polite.

But clearly his attire is being commented on and he should respond with the proper graces! The smile twitches as Micolash reaches up both hands to feel at his cage, fingers snagging on individual bars as he drags them downwards slowly. "Oh. Is that good? I'm quite proud of it. My own invention, you see."