"this is royal fun."

Instances where Humbert gives himself cognomens are everywhere throughout the book, and not just in Part 2, but in Part 1 as well.  With this use of language, Humbert gives the impression and convinces himself (and maybe the readers) of a royal descendancy, making himself sound "better" and putting himself above others.  Even as early as his taxi ride with Taxovich and Valeria, he refers himself in cognomens as "Humbert the Terrible deliberated with Humbert the Small whether Humbert Humbert should kill her or her lover, or both, or neither."  In the context of his cognomens—Humbert the Terrible and Humbert the Small—he makes his name even without the cognomen—Humbert Humbert—appear royal.  This struck me early on, because in lieu of presenting the appearance of royalty, it just seemed silly—and maybe it was meant to be.

The lodges that Humbert stays in are mostly named "courts."  Even the nameless ones he refers to them as motor courts, when there are other monikers that are the same things such as motels, motor inn, motor lodge, tourist lodge, auto camps, tourist home, tourist cabins, auto cabins, and cabin camps.  The majority of the ones he does mention by name end with "courts."  "...all those Sunset Motels, U-beam Cottages, Hillcrest Courts, Pine View Courts, Mountain View Courts, Skyline Courts, Park Plaza Courts, Green Acres, Mac's Courts."  Humbert deliberately stays partial to the word "court."

"She had entered my world, umber and black Humberland, with rash curiosity."  Humbert refers himself as "Humberland" as he rationalizes his relationship with Lolita, as Lolita reacts to Humberland with repulsion.  "I still dwelled deep in my elected paradise—a paradise whose skies were the color of hell-flames—but still a paradise."  This gives Humbert an image not of just a person, but as a whole realm, kingly or not, to be explored.  That he has reign and is in his "elected paradise."

"...so many delights had already been granted me by my traveling companion that the search for a Kingdom by the Sea, a Sublimated Riviera, or whatnot, far from being the impulse of the subconscious, had become the rational pursuit of a purely theoretical thrill."  Humbert is advised by his psychiatrist to take Lolita to a beach, which he refers to as a "Kingdom by the Sea," adding to the previous implication that a kingdom is a place of joy and exploration and possibility.

"...and all around there abides a sustained rustle or potential snakes—que dis-je, of semi-extinct dragons!"  Dragons also paints an image of a fantastical and "middle-earth" sort of kingdom, in which Humbert apparently likes to daydream about living in.

"But I was quite positive that as long as my regime lasted she would never, never be permitted to go with a youngster in rut to a movie..."  Maybe Humbert is not just a kingdom waiting to be explored and indulged, but a kingdom that rules and dictates.