The term "Kung fu" doesn't (or perhaps shouldn't) just suggest Chinese martial arts. The original words and usage (according to Wikipedia at the moment) mean semi-literally "achievement of time". That is, it's the result of long-term application of energy, of training body and/or mind in some discipline, of developing skill via practice and work. So a person can "have good kung fu" in cooking or calligraphy.

Hence, the lines in the scientifically-silly film The Core, wherein hacker character "Rat" Finch (played by actor DJ Qualls) chortles, "Your Kung Fu is not strong!" as he breaks through software barriers.

(cf. RatTales (2003-05-10), ...) - 2014-04-28