Random spoofers, easily distracted, ZAZ are too devoted to silliness to mount even a sustained parody of movies.

The joy of The Naked Gun is its lunatic sobriety.

Its creators, Jerry Zucker, Jim Abrahams, and David Zucker, have taken their brand of hit-and-run conceptual humor to a new, refined pitch.

The film, then, is assiduously, determinedly, ruthlessly bone-dumb. But for that very reason, it is inadvertently more realistic, and more unflinching, than the gritty police dramas it is trying to gently parody.