when I was 13 I remember being stared at by guys when I was semi-hard-at that point it was 8.5 and I never realized at 13 how big it really was for my age.
at 14 it grew to 9 and at 18 it was 10.5
I lost my virginity to a girl when I was 18 and she could not take all of it- was kinda awkward and it only took 10seconds..........