consider: voyeuristic mccree catching ear and eye of his commander, ana, and morrison getting it on with gabriel getting treated filthily by the other two. maybe some pet play going on. at first mccree is concerned with the nasty things they say to him, but gabe is clearly into it. jesse jerks it in the hall and only ana figures out that he had been there and watched. cue a later confrontation that involves a humiliated mccree and the trio giving jesse a barely there taste of what he wants.