You see, I really WANT to break out the "oh snap" for this, but it just... You really don't want to overuse that, you know?
Anyway, Halibut is a fish, so Nanase smells something "fishy", and "halibut" is a heck of a lot of fun to say.
Meanwhile, over in nerdsville, there was a tailor shop on Star Trek: Deep Space Nine owned by one plain, simple, Garak, who was most definitely just a tailor, and nothing else.
Full disclosure, I actually wanted Tedd to comment on it being a reference, as it would also involve a no-contact fist bump between Susan and Justin for the DS9 reference. Given the space available to me, however, it made more sense to just have Diane comment on it.
Now if you'll excuse me, the no-contact fist bump must be added to "things to find a place for later".