I've only once participated in a real gang bang - guys lined up to have a turn with a woman - but in this instance at least all the men were fully respectful of the woman. It was in a play room at a club. I had met the couple earlier in the evening in a social area, and they both seemed nice and happily connected with one another. There was no mention at that time of plans for a gangbang.
Later in the evening, after playing with a couple of other women, including my date for the evening, my date and I wondered into a play room where the gangbang was taking place. My date, who was extremely nearsighted and really didn't perceive what was happening on the other side of the room, found a guy to suck. I got in line, with about four or five guys ahead of me. The woman was on her back on a bed, but surrounded on both sides by a couple of men who were verbally supportive of her, almost like attendants. Between episodes of intercourse they would offer her water and check how she was doing. Her husband, standing at the foot of the bed did offer verbal encouragement to the men, asking each to "fuck her good" or similar. Each of the guys ahead of me finished pretty quickly, maybe two or three minutes each.
I clearly recall when it was my turn one of the guys closest to her on the bed asked if she was ready for another round, and she nodded affirmatively and took a drink of water that was offered her. I slid between her legs and entered her pussy. I didn't hold back my orgasm at all, came quickly and withdrew. By this time there were another half-dozen guys in line. I have no idea how many men this woman entertained in the evening, but for the time I was there it was clear that all of us there were participants in a scene meant to gratify this couple.