I am 6ft 3in tall with size 13-1/2 to 14 (US sizes) for shoes. When I am under 200 lbs, I am 8 inches long and when I am around 235, I am less. My brother is nearly the same size, but slightly larger, and has been since we were 8 to 10 years old and his cock is about an inch shorter. His feet are a little larger. We both have large hands. We had an uncle who was very skinny, maybe 160 lbs and 5ft 6in tall with small feet. He had a monster cock, much larger than mine. A cousin was about 5ft 2 in tall and he had an inch longer cock than I do. Many of my friends in school and college were about my size and none of them had as large cock as I do and most were in the 5 to 6 inch range.
I am white and had many black friends in high school and only several, whether taller or shorter, had as large a cock as I do when hard, but many of them were showers with larger soft cocks. We all saw each other naked in showers with both hard and soft cocks. Our high school football quarterback also went to college with me and became a close companion and worked with me in summers. One night he saw me naked with hard-on and semi-hard-on and claimed that he had never seen a large a cock and there were some very tall, both heavy and skinny, guys with all sizes of feet on his high school teams, and he claimed none had above average cock sizes. About 2/3 of our team was black and about 1/3 were white and I was not on the team. I haven't seen any correlation with big feet or height to larger cocks. It seemed random sizes for random body builds.