I found this post in here, so decided to reply, I mean why not.
I was part of a Gangbang once as a bottom, it was about a year ago out in balls bridge, i went out thinking I'd just suck some guys off and watch other people fuck, i was twenty two at the time and had only been fucking for about a year or so, so i wouldnt have been confident to be the only guy taking dick at the party. But whatever way it turned out, it ended up with me being the only bottom and the complete center of attention.
There was a guy with a massive cock who was about my age, it was one of those dicks thats both huge and rock hard. I was pretty tight at the time, not virgin tight, but still small. This guy just slid his knees under my legs and started teasing my ass with his huge dick, I remember pulling my torso up to look down. He was wearing a black condom and just rhythmically rolling his hips, every now and then his cockhead would snag on the entrance to my hole, but that just caused my muscles to tense up again.
An older guy came behind me and gave me poppers, i got pretty dizzy, but i relaxed and just opened up. I can still feel that burning sensation of the guys head stretching my ring and being really surprised when his head made it all the way in and my hole kinda sucked a great deal of his shaft in. I could literally feel the bumps and veins of his cock dragging along my flesh, and there was a slight throbbing sensation. We'd gained an audience at this point and there were guys tweaking my nipples, jacking me off, giving my poppers and kissing me.
After a while he pulled, felt like my ass would collapse in on itself, but it all happened so slowly that he hadn't hurt me or left me sore. Some red haired guy turned me over onto all fours and started to pound me real hard. If it wasnt for the first guy opening me up so well i totally wouldnt have been able to handle it. I fucked for ages and came about 3 times.
There was another point that night where the older guy who had first given me the poppers was fucking me while another guy was whispering dirty talk in my hear... wow that was hot. Couldnt see something like that ever happening again.