Ah, um, yes. I believe that's where it comes from.

[He doesn't doubt that she's probably heard stranger names, especially here, but the fact that she accepts it as a normal name is kind of surprising. Then again, the fact that she can recall a story like that as if it also were this totally normal thing... She must be an extraordinary person.]

A crab the size of a car... That does sound rather scary. What happened to it?