LA CAGE AUX FOLLES - At the K-B Janus.

It is a perverse sort of freedom that will use such a culturally touchy subject as homosexuality as a theme for film comedy - but will strictly confine the joke to the narrowest known stereotype.

"La Cage Aux Folles," the film version of a successful French stage comedy about a middle-aged male couple, has only one view of the homosexual, that of the limp-wristed and limp-minded queen. What is offered up for laughs, over and over again, is the idea that those people just can't keep their pinkies down, or control their hips when they walk, no matter how great the emergency need to pass as conventional.

This is a posture that ridicules, even more than the homosexual male, the heterosexual female. This prancing and mincing are supposed, of course, to be what women do naturally. And the women's roles in the film seem pale and inept in comparison, except for one who is unfeelingly aggressive and maternally rejecting.

The conclusion seems to be that women are bad at being "women" and worse at being "men." A man blusteringly acting the "man" is somewhat satirized, but the only posture treated with energy and verve is that of the men acting "women."

What bizarre combination of orientation, social views and secret feelings will find this funny is better not imagined. CAPTION: Picture, MICHEL GALABRU AND MICHEL SERRAULT IN A SCENE FROM "LA CAGE AUX FOLLES."