Have you packed on some pounds? I read somewhere that you lose an inch for every 30 pounds of weight gain. I am 6ft tall, and when in my early 20s, I weighed about 155 and my cock was a steady 7.5", though sometimes when super turned on, it could surge to 7.75". Now that I am in my 40s, my weight ranges between 175 - 180 lbs, and my cock is more in the 7 to 7.25 range, depending.