This also could have been put into "Revenge".

From an early age I knew I was different from other boys, as I liked both sexes. At the age of fifteen I sucked my first cock. It was a guy who was in his late twenties, whom I met in a park close to where I lived with my parents. We went into a very dense wooded area, where I spent over half an hour sucking his cock and having him lick and suck on my cock and asshole.
I had sexual relationships from then on with both sexes and met my "Fuck buddy" Mike twelve months ago. We met at the place we both work part time. It was at our workplace my confession comes from.
A guy who both Mike and I know (And one who'd previously beaten me up for being bisexual) came in with a bunch of other guys. He started playing up, calling us both "Faggots" and threatening us with a beating if we got his order wrong. Winking at Mike, I told the guy and his friends, their order would take about ten minutes as we'd just put in some fresh food to cook that they wanted. Walking away I smiled at another of our colleagues, a young female called Debbie, who was just as offended as we were.
As they sat down, I took Mike into the back, made him drop his work trousers and began to suck his vary large cock. When he was good and hard, I turned around, lowered my work trousers and boxers, and told Mike to fuck me. It was such a good fuck, hard and fast and very horny. I came within five minutes masturbating myself as Mike pounded my asshole. Telling me he was close to cumming, I asked him to cum on my but cheeks.
Scooping Mike's cum off my ass and adding it to the load I'd captured from myself. Dressing I shouted for Debbie to bring in a seeded bun. When she left the back room, I smeared the cum all over the bun, got Mike to take his cock back out and had him wipe his cock all over the cum laden bun, after it had been up my asshole. Laughing we then made up the order for the dickheads outside.
Making sure I got the right order to the person I wanted to have it, Mike and I watched the homophobic wanker eat every morsel of his order. He even told Mike it was really good, different but good.
They haven't been back and I know what we did was wrong, but the guy really asked for it. I'd never normally do anything like this, but being threatened with violence and being made to feel inferior had me get my "Revenge" head on.