The average adult male has a penis of slightly more than 6 inches.

I don't see why penis size matters, I have a smaller than average penis, but I'm not ashamed of it, it works for what I need it for, and that's all that matters to me.

Most ancient culturs found small penises to be preferable. Look at any ancient roman nude sculpture of a male, and it will have a small penis.

Edit: the longest recorded adult male penis EVER was only slightly longer than 9 inches. Somone has been lieing on this poll.