Was showering at the gym today waiting for someone to walk in so we can jack off and show off. This tall, skinny African American guys come to the stall in front of mine and he had the biggest dick I have seen in person. We wait for the guy next to me to leave. I had two condoms with me. As soon as the guys next to me leaves, we both start showing off and jacking off. He walks over to me and tells “great ass” I pulled out the condom and he puts in on. I’m a bit nervous because I normally don’t bottom, but I have been urging too. I use soap as lube and he puts on soap on his dick as well. He tells me to walk over to him. I did and he tries to stick it in but it’s painful so I told him I couldn’t. He tells me to relax and to try it again. Mind you, we are in the showers and anyone could walk in, in any minute. He puts on more soap on his dick and I put more soap on my ass. He bends me over and I tell him “do it slow” he does and it goes in all the way. It felt painful, yet pleasurable. He starts pumping me slow and then goes faster and faster. I start moving my ass. At this point, he has me doggy style and he’s pulling my hair. He came so fast and he tells me “it’s because of your tight ass” and I remove his condom and walk over to my stall to clean up. He asked me if I came and I lied so he could leave. I honestly wanted another dick in me. There was this hot mexican guy who came in but I saw him having sex without protection the other day, so I didn’t want to mess with him. So today, I was a slut and I enjoyed my first BBC!