This may come off as gay, but I grew up with a neighbor who was about 4 years older than me and all through my life we have been really good friends. I remember growing up he was always a big kid but he had a small unit ( You’re bound to see your best friends dick at some point in life). He’s now 21 almost 22 and I just turned 18. The other day at the gym, we were in the locker room and trust me when I tell you, your dick does not stop growing at 16. Take that however you want, just know that my friend is living breathing proof that sometimes your member can be a little delayed with growing up.