The first time I saw a black cock was back in primary school.
Not very original, but I saw it under the shower after PE. He was a good friend of me and I can still feel the tension when we had to shower for the first time. He, another friend (latino) and I were the biggest of our class, all about the same size.
Years later, when I was 17, I saw another one. It was during a sleep-over at my cousin. This black dude was a friend of my cousin and was also staying over. He was really fond of his body, flexing his muscles and walking around shirt-less, you know it. And, to be honest, he had a great body!
He also started bragging about his cock, that he had a 'real black cock' and referring to his big size.
Before we went to sleep we wanted to take a shower, and my cousin and I used to be very comfortable with each other. We walked around naked and stuff, tooks baths together, you know it. But I didn't know that my cousin and his friends also did that. So my cousin took a shower first while his friend and I watched TV in his bedroom. 15 Min later he walks in naked...
Then the black friend goes for a shower and also returns naked. Really nice cock and amazing body. And clearly a semi-hard-on, he even admitted he was getting an erection. It was just average but looked big next to my cousin's small one.
When I returned, I gave them a great show. Showing my semi-hard cock made his mouth fell open...