It's from Good Will Hunting, but more generally, people from Boston love to use "wicked" as an adverb. You don't really hear that anywhere outside Boston and the surrounding areas.
I can imagine that would be somewhat difficult for non-Massholes. Which, btw would be a good addition. Official denonym: Bay Stater, non-official denonym: see above 😂
I don't know any limericks about Captain Ahab.
"Captain Ahab's island, oft-mentioned in limericks"
J/K. My prescription ran out :D
Who kept all his cash in a bucket.
But his daughter named Nan
Ran away with a man.
And as for the bucket?
Nantucket.