So here's the thing, I'm 13 and me and my older cousin have compared and jacked of together. His penis hard was probably around 5" and mine is about 4.5" hard. My cousin is only about months older than me. I taught him how to masturbate late last year around Christmas and his cum was white and mine was still mostly clear. My cum just turned white but my penis hasn't grown much. Do you guys think that because my cousin hasn't masturbated as long or as much for that matter that his penis is bigger than mine? I've read that people who masturbate more often have bigger penis's but I was just wondering what you guys all thought.