I was very apprehensive the first time a Black man had me. Hubby was present (I was THAT nervous I wanted him there) and I was thinking of him when told to get into the 'all fours' position. Naturally, I had seen him before that, and knew that he was VERY thick, which only served to increase my apprehension - that and that he was mounting me bare drove my heart into overdrive! However, he was very considerate and polite, frequently stopping, allowing me to adjust to his size.
My overall impression at the time was how much he was stretching me. I thought there might be damage, but there wasn't the expected sting of a cut developing, thankfully! When I was fully penetrated, he hesitated again, allowing me to shift and adjust again. I can honestly say that I had never in my life felt so full! His strokes were slow, yet powerful. He held me in position and after a bit, I was relaxed enough to fully enjoy the experience. He had a tremendous amount of stamina and lasted for quite a while. When he finally ejaculated, I was again stunned at the sheer amount of semen he shot up into me, but at no time was I in any real pain, perhaps discomfort initially, but that soon went away. All in all, it was an outstanding introduction to interracial sex!