It was pretty cool to write something here earlier and hear that it got some people excited. Let me know if you like this too.
I had what was sort of a mutual j/o experience once with a college roommate.
Late one evening I walked in to our room. George was sitting on our couch, giving a massage to our mutual friend Wendy, who had strained a muscle a bit playing tennis earlier that day. George said hi and slid to the far end of the couch without getting up and sugested I take over for him. I did, and rubbed Wendy's sore back and shoulder while chatting happily with both of them. After a few minutes, George excused himself and left the room.
As soon as the door shut behind him, Wendy started giggling. I hugged her from behind and asked her what was so funny. She said that George and her had kissed a few times and that he had gotten overly excited. He had ended up telling her that he wanted to have sex with her, and she turned him down. Apparently when I walked in he had just informed her that his cock was erect and that he was about to try and press it into her back.
I joked that I'd saved her and she giggled, and then said that George had not gotten up when I arrived in order to hide his erection. We laughed briefly, and I said that I wished I'd walked in on the two of them, which was true. I'd enjoyed listening to George furtively masturbate under his covers when he'd thought I was asleep. I wanted to see him get off, to watch everything happen. I didn't tell Wendy this half of it. I just told her that I wanted to see her nude, which was also true. She smiled and asked if I was serious, and I said yes.
Wendy untangled herself from me and got up. She leaned over me on the couch and we embraced. I got real excited, and wanted George to walk in on Wendy and I in a compromising position. I reached both hands down for her ass, which was pointing towards the door, and slid them over it. I then leaned up and began kissing her. Right as I began this George walked in. My cock, which was hard already, sprang to a full erection. Wendy tightened our embrace for a few moments and then freed herself from me several seconds later and turned around. I stood up with my hard cock, hoping George would notice. Wendy walked over to George, hugged him, and kissed him pretty hard. She then released herself from him and walked to the door. She laughed and smiled and said, "Goodnight, boys," and walked out of the room and closed the door behind her.
George whistled as soon as she left. I said that she'd gotten me hard, and George announced that he was going to have to masturbate that evening. This was just what I'd wanted to hear, so I said that I wasn't going to be able to wait that long. He said he couldn't blame me and chuckled. I said that I guessed I'd better hit the shower if I wanted to get myself off, and he said I didn't have to leave. I was really raring to go now, and I suggested he join me. He paused for a second, prompting me to go his desk and pull out a Playboy copy of a short pornographic picture "book" he had, to give me things to work with if he didn't join me, and maybe to convince him it was OK. As I sat myself down on one end of the couch and began flipping through the Playboy to find my favorite page George decided it was OK, and got out a Playboy of his own and a box of Kleenex (which he put in the middle of the couch) and sat down on the other end from me.
I took off my shorts and pulled my boxers down enough to free my erection. I grabbed my balls with my right hand and squeezed gently, and circled my left hand around my cock.I began to stroke myself, while studying a pair of perky breasts in Playboy and waiting for George to take his dick out. It didn't take long. He was about 3/4 erect, circumcised, and a bit bigger than me. He stroked right handed, while flipping through his magazine with his left. Soon he was fully erect and stroking quickly.
Pretty quickly after that we were both breathing hard. I was afraid we'd both cum with nothing else happening. As I thought of what to do, George stopped and reached over to his dresser. Vaseline! He opened the small bottle, got a gob out, and spread it thickly around the top of his cock. His first few strokes after this made a liquid, sucking sound. I asked him for some. What he did surprised and delighted me. Instead of just handing me the tub, he put a generous amount on his fingers and reached over to me and rubbed it briefly around my cock's head. I groaned, and thanked him as he took his hand away.
This made me bolder. I got to pumping hard, putting both of my hands around my cock and pushing my hips forward. While doing so, I said that I needed to cum. Then I asked George if he'd planned on fucking Wendy. He said yes. I began to fantasize out loud. I told him he'd have to bend her over the couch and fuck her from behind. Then I'd come in fuck her mouth. As she had an orgasm, I'd fuck her mouth hard, gagging her a bit, and then hold on to her head and pull out and shoot my load into her hair. I'd rub it into her scalp lovingly and make love to her neck with my mouth as George came. Then we'd make out with her, and as soon as we got hard again, I'd fuck her pussy which was wet with George's jism, and he'd fuck her mouth and hold her head, still wet with my cum.
When I finished with the story, George and I were breathing and stroking very hard. My eyes were fixed on his rigid, purple-headed cock, pumping in and out of his slick hands. He was watching mine as well. He said he was about to come, and almost immediately after that pushed hard forward and stiffened up. He forgot all about the Kleenex, as a small gasp ecaped him as a brief jet of semen shot from his cock and landed on his leg. My own cock began to explode. I fought to keep my eyes open, so I could see the smaller and smaller spurts shoot from him.
When it was all over, I thanked him for letting me take care of myself. He shrugged and laughed. We never overtly got off together again, but I was never shy about masturbating under the covers after that, and neither was he. We even chatted a bit about things that had gotten excited while both of us "secretly" worked on ourselves under the covers. That was always pretty exciting.
I hope you liked it.