I was 26 when I entered my first bodybuilding competition. Up to that point, I had never worn posing suits in public. At the time I was on a tight budget so I only had one posing suit, which a bodybuilding friend had given to me. It happened to be white and unlined. It was also very minimal and one size too small for my muscular figure. Regardless, I decided to wear it at the show. I arrived at the show wearing the posing strap underneath my loose fitting sweats. There were guys there to help us get ready for the show, including applying tanning cream and oil. My weight class was next up, so it was time for me to get the tanning cream/oil applied. It just so happened this really hot dude was assigned to me to help me out. Anyway, I stripped down to my posing suit and the guy started using his hands on me, first my upper body and then my lower body, starting at my legs. When his hands started approaching my mid-section, I started getting turned on by this hot dude putting his hands all over me. I got a semi and I think he noticed, but he kept doing his job. Anyway, by the time he was finished the oil had seeped onto my posting suit and the suit became see through. To top it off, I noticed the guy was also getting excited. He put his hand over his groin area to try and hide the fact he had an erection. About that time, the contest organizers told me it was time for me to go on stage. I walked out with the others in my weight class. There were probably 150 people in the audience. This was all new to me, so I wasn't sure what to expect. The last thing I expected is what happened next. As a kid growing up, I'd always been somewhat of an exhibitionist. Maybe because I was gifted with a muscular body and other guys were always sort of intimidated by me. Anyway, along with my exhibitionist tendencies, I would always get turned on when people were admiring my body. Unfortunately, I had not considered how this would manifest itself when I walked out on stage. Sure enough, when I saw all those guys in the audience admiring my scantily clad body, I immediately got a full on hardon. Yep....that's right. I had a massive hardon in the tiny white, unlined posing suit that was almost see-through. In fact, it was all I could do to prevent the head of my big dick from slipping past the top of my suit. At first, I was embarrassed, but the reaction of the audience was not what I was expecting. They were ecstatic and clapping and yelling for me, which made me get even harder. I got so excited that I started leaking precum profusely. Not that it mattered since my posing suit was already covered in oil. I continued to do my poses, loving every minute of the moment. I was in heaven, when all of the sudden, I started getting that feeling shortly before I ejaculate. I couldn't believe it, I was so turned on that I was about to have a spontaneous ejaculation. It didn't help that every time I moved into a different position, the oily fabric was brushing up against the sensitive underside of my hard dick. After a few poses, it was no use trying to stop my dick from cumming. That's right....it had a mind of it's own. I felt myself starting to cum just as I had turned back towards the audience for one of my poses. As soon as cum started shooting, it started to fill the pouch of my posting suit. I was mostly worried that I would cum so much that the posing suit couldn't contain the volume of cum. Sure enough, about half way through cumming, my cum started leaking down my legs and even onto the stage. It was so obvious that even some of the other contestants started noticing me. Some of them even started getting hardons themselves. By the time I had finished cumming, it was time for my weight class to exit the stage. When I got back to the dressing area, I quickly pulled on my baggy sweats. The other guys didn't say anything, but I know they all knew what had happened. I still have wet dreams to this day thinking about that experience.