Mark and I were messing around on the beach together, when someone walked up on us while he was sucking my dick. We quickly ran off so we wouldn't get caught, and Mark sprained his ankle in the process. Mark was in some pain and wanted to go see a doctor. He called and made an appointment for later that afternoon, and we stopped at my place to grab one of my crutches that I had in my closet. When we got to the doctor's office we were told that they would take us back to a room, but that there was only one doctor making all the appointments. We knew that meant that it was going to take him a while to come in and see us. Looking around the room, I saw some different posters that were up on the wall. One of them was a poster of the male reproductive organs. Just looking at the poster started making me hard. We never got to finish what we started at the beach. I asked Mark if he wanted to mess around while we waited for the doc, and he smiled at the idea. I stood up next to him, and moved in close. Our soft lips started to touch and we kissed. I helped Mark take off his pants, and then we took off his briefs. I took off my pants and shirt as he finished getting undressed. Marked leaned back and I started to give him head. Sucking his dick I played with my dick to start to get hard. Mark has a nice stomach, and a huge cock. It gets me turned on thinking about how big his cock is. I sucked his dick, and he moaned and told me he wanted more. Part of me hoped that no one outside would hear, but then I it was hot thinking that we might get caught again. Sucking on his dick, he tends to like it more when I concentrate on the tip of his cock. But, it is so big that I can't get it all in my mouth. I made sure to use my mouth and my hand together to help get Mark closer to getting off. One thing that gets him moaning and breathing hard is to have his balls licked. I sucked his dick for a while, and told him that he needed to hurry so we didn't get caught. I used some lube, and even though it took him a while. Mark let out that he was going to cum. He held it back and then shot the load on his chest. He came a huge load, and I am sure that it was from not getting off before. After that it was my turn to hop up on the table and Mark to suck my dick. We traded places, and Mark gave me head for a while. He used his mouth and hand in the same motion and that felt great. I like to have my cock sucked for long periods of time, but I knew that we were cutting it close to having the doctor walk in. Mark jerked me off really fast, and with a hard grip. I came shooting my load on my lower stomach and I was tired after that workout. We took a second to take it in what we had done, and then both started to clean up our mess. We knew that someone was just outside the door talking. Mark got his clothes on and hopped up next to the table. I took a seat back in the chair, acting like all we did was wait for the doc. Hopefully, it didn't smell like cum and sweat.