i'm 13 and have a 3 3/4 inch dick erectd is that good or bad??
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Wut size is right?
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Yes everyone grows differently.
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There's no "right" size because, as leon93 says, everyone grows differently. Especially at 13, some guys have hardly started growing there, while some others have finished. You're typical for your age and you can expect to grow more.
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you will grow more seeing as your only 13 dude