"Eight Shining Palms of Doom!"
"Black Crane Style Drunken Kinokuji Pressure Kick!"
There is probably little or no logic associated with making up names for imaginary martial arts moves, so I don't think I can accurately explain the urge. It's fun, though. :)
We get our "martial arts fix" in strange ways: The local channels used to have Kung Fu Theater serials that still occasionally appear in reruns. A number of independent schools teach martial arts classes to paying students. Virtually every fighting game in the arcades involves disciplined combat in some form or method. There is even an entire category of animé that is devoted to martial arts, serious or otherwise.
And if you're still skeptical about the degree to which the "chop-socky" has pervaded the public consciousness, I can always start naming movies: The Matrix. Kill Bill. Crouching Tiger, Hidden Dragon. House of Flying Daggers. Batman Begins. Daredevil. Elektra. Blade. Bulletproof Monk. Lethal Weapon 4. Perhaps even Kung Pow: Enter the Fist. Heck, we've been running into martial arts movies ever since somebody picked a fight with people like Bruce Lee and Chuck Norris on camera.
Even if we don't directly engage ourselves in the martial arts, we still reserve a sense of admiration for those who do. This is why kids emulate Dragonball Z's "KAMEHAMEHAAA!", why we have irresistible urges to kick offensive guys in the crotch, and why we still run into weird people who declare "Back off, man! I know karate!" when threatened.
As with all things that catch our fancy long enough for us to put a "cool" label on them, the martial arts have become something of an urban legend to many people. From the point of view of many non-fighters (including me, for that matter), these collective martial arts are all about the punches, the kicks, the "special moves", and the weird-sounding names that take longer to announce than to execute.
I remember God of Cookery, a cooking-and-martial-arts farcical comedy that had names like "Ten Thousand Buddhas Jumping Over Wall!" (Yes, the exclamation point at the end was important.) For that matter, the Deadlands: Doomtown collectible card game also had a kung-fu action called "Step Back to Ward Off Monkey" (which is an actual martial arts move, but it sounds like somebody just made it up, doesn't it?).
So would you blame me if I like making up names for imaginary martial arts moves?
"Supreme Lightning Heaven Flying Arrow Nine-Point Prodigious Strike!"
The longer ones seem to feel more satisfying to pull off, for some reason.
Aw, come on. You know you want to try it.