I am real ashamed about what I am about to write, back when I was about 18 I had been out drinking and was on the late subway train home. On the same carrieage were a few others and a rowdy group of guys.
Soon most people were gone but for me and a woman and these group of rowdy guys all about 16 years old. As the doors closed and the train started to move I could see them moving in on this woman, I shut my eyes and pretended to be asleep.
As i watched peeping so they didn't see all 4 of these guys fucked the woman as she was held down and I did nothing to help her just pretended to be asleep. She was begging them to stop and telling them she was married with kids but they just laughed at her and carried right on using her.
In the end they got off at the stop before mine and left the woman on the floor with cum oozing out of her c**t.
I am ashamed to admit that I had a raging hard on having seen her r**e and humiliation and have wanked myself off many times remembering her and how they used her.