Check this out.

http://ehealthforum.com/health/topic122675 .html

that being said, you're only 16 and you could keep growing, and even if you don't, most women orgasm from oral/manual stimulation, not internal penetration. So as long as you get some practice with your tongue and fingers, it's not something you need to worry about.

It's important to remember that the girth measurement is circumference, not width. So wrap a string around your penis if you need to measure the circumference, don't just try to estimate how wide it is (straight across the middle)

Calm down. ur still young dont worry urself over this. besides the male penis doesnt usually stop growing til the age of 21. You have plenty of time to further mature an become experienced.

I wish I could be 16 again and stop stressing out. I blame the stress on my lack of penis size.

Trip, Your 16 so you penis is going to keep growing and don't get too hung up about it. What is important is how you use your erection and also how you use other things, such as your tongue, to please a woman. I've seen penises of various sizes and it always boils down to how well the fella can use it to please me.

Just a thought.
Wendy