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I became very interested in penis size around age 13, when I noticed my penis becoming much longer. This was about a year after I started masturbating and grew pubic hair.

I looked at Web sites that said the average penis is around 6 inches (15.25 cm), and at that time my penis was already 5.5 inches (14 cm). Between ages 13 and 14, I had the most rapid growth in length, which I know because I kept a ruler and string next to my bed so I could measure my length and girth about once a month. It grew from 5.5 inches (14 cm) to around 8 inches (20.3 cm).

In the past year, it has grown only about 1/4 to 1/2 inch (.65 to 1.25 cm) in length, but about 2 inches (5.1 cm) in girth. At age 15 I had a long, skinny penis that looked weird. Now it seems perfectly proportioned since it thickened. I think I’m just about done growing, too, which is good.

Zoe edited question