There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page. I'm a 14 year old boy, I have a have a young looking face, I'm short for my age, and I'm still smooth without body any hair, but when I measured my erection my penis was almost 7 inches long. Is it normal for just one part of a young boy's body to be an early bloomer? By comparison the average adult erection is between 5 to 6 inches and you have that beat by an inch and could continue to grow until your in your late teens to early twenties. Sometimes it is. Often times, if a young boy is already hung, he won't grow much larger, if any at all.