Criticism is being leveled today at the Air Force Academy in Colorado Springs for a "lewd" skit that was performed at a black-tie graduation celebration last April, to the applause of cadets and higher ranking officials. First, the setting:

Everyone from the U.S. Air Force Academy was dressed to the nines for last April's black-tie "dining in."

The pre-graduation celebration was truly an elegant affair, sponsored by the academy's Department of English and Fine Arts, and attended by as many as 80 cadets, civilians and high-ranking officers.

During the entertainment portion of the evening, two cadets performed a skit, liberally lifted from Monty Python's Meaning of Life, that had been sanctioned by the English department.

Here are the published portions of the skit in which"the actors talked about a mythical - and X-rated - sex education class":

ACTOR ONE: "Now, sex, sex, sex, sex. Where were we? The purpose of foreplay is to . . . (The cadet, in graphic detail, goes on to describe the purpose of foreplay as the preparation of a woman so a man can "penetrate" her. Then he asks the other cadet for two ways to stimulate a woman.)

ACTOR TWO: (This cadet responds with a graphic suggestion.)

ACTOR ONE: "What's wrong with a kiss, boy? Why not start her off with a nice kiss? You don't have to go leaping straight for the