I knew at 8 that I was bigger than most boys. An older cousin (11) spent the night and we compared and we were both surprised that I was noticeably bigger than he was. I started puberty at about 13 and began to get teased about my size in jr high locker room. At first I was embarassed being bigger than the other guys, but didn't take me long to get over that. I had a huge growing spurt the summer before 10th grade and began measuring my cock for the first time. I was 15 when I officially hit the 8" mark. I grew only about 1/2" after that time.