In order to answer this, more information is needed. How old are you? What's your racial background? Is your body still changing?

I just turned 16, I am not too sure about the racial background, but umm....English, german. Yes, I am pretty sure that my body is still changing

Well.. Im 15 and im hope im still growing becuase I think 5.5 is 2 small.. But how big r u and hav u gone through puberty and have alot of hair and stuff like that?

The average male will stop growing, in all its forms, between the ages of 19 and 23

Can you shrink before than?

im 14 and im 7" erect.

My advise to you is wear boxers, this is logic the more space, MORE SPACE to grow. forget of briefs or speedo things this is bad and in my opinion slows down the growth of your member and affects the form, some guys have the penis bent down and I think this have to do with the tigthness of their under wear while growing up, you are in the age of baggy clothing. Wear THEM!!! If is possible sleep with out underwears of pJ until you turn 21-23. Godspeed to you. And this is a family thing is Dad is big well you have a lot of chances to be like him but who is going to ask him??? genetically in that area you are more like your father and not like your uncle from your mother side. I hope I made myself clear

You can keep growing until early adulthood, 21-ish. Untill then, don't worry about it! There is no way to tell how big you will get or when you are done. Average is about 5 inches. NEWSFLASH-- that means 50% of men are LESS THAN 5 inches!!

And take it from a woman, bigger is NOT better.

What's the average girth. I measured today, and I was 6.5 long and 5.5 around. I heard girth is more important.

Yes, a big penis can be very painful. More than 6 inches is a waste. You cant go all the way in and if you do you end up hurting us. Certain positions are almost impossible. So be happy to be average!!!!!