Also, I had to make this moment into a gif, because I did see this episode recently and I laughed my ass off. This is a few moments after Kirk summons McCoy and Spock to the bridge.
Both TOS Naked Time and TNG Naked Now came at an odd time in the series. Early first season, the characters normal behaviors weren’t established yet, and we’re supposed to just know that they just don’t have a weekly orgy in the far future.
That's funny because, at least according to a lecture Gene Roddenberry gave that I had on LP, that he originally wanted the ship's crew to be half men and half women, but the executives made him change that because, "people will think that something's going on up there!"